What Gamee.games is reporting about the Diablo IV x DBD collab
A Japanese-language blog called Gamee.games has published a post titled something along the lines of "DBD x Diablo IV Halloween crossover to release in October 2026," hosted at the URL blog.gamee.games/dbd-halloween-haunted-by-daylight-2026/. The article is currently being cited and reshared in DBD fan communities on Discord, on Reddit (specifically the r/deadbydaylight subreddit), and in a number of YouTube videos that aggregate gaming news from non-English sources. The site itself is a small fan and news blog that publishes Japanese-language coverage of Western games, with a back catalog that covers Dead by Daylight, Diablo IV, and a number of other live-service titles.
The core claims in the Gamee.games article, as paraphrased from the Japanese text and as relayed to us by readers who speak the language, are as follows. First, the article claims that a Diablo IV x Dead by Daylight collaboration will release in October 2026. Second, it claims that the collaboration will launch alongside Haunted by Daylight, BHVR's annual Halloween event that historically runs from mid-October through early November. Third, and most concretely, it claims that The Artist (Carmina Mora), one of the more recent original Killers introduced to the game, will receive a Legendary-tier skin based on Lilith, the Daughter of Hatred and primary face of Diablo IV. Fourth, it claims that a selection of Survivors will receive cosmetic outfits themed on three of Diablo IV's playable classes, specifically the Necromancer, the Barbarian, and the Sorcerer. Fifth, it claims that the collaboration will introduce a collectible item called the "Dark Trinket" that players can earn by completing event missions, with the trinket unlocking additional cosmetic rewards as the event progresses.
The framing of the Gamee.games post is presented as news, not speculation. The Japanese text, per multiple readers who have shared excerpts, uses phrasing that suggests the collaboration has been confirmed by the developers, including references to release timing and specific content drops. The article does not, however, link to a BHVR blog post, a BHVR social media announcement, a Blizzard press release, or any other primary source. It also does not cite a specific BHVR spokesperson or Blizzard representative. The article's sourcing for the collaboration itself appears to be Japanese-language community chatter and possibly translated leaks, but the original sourcing chain is not fully transparent. The URL itself is the only direct link to the report; we are not aware of any corroborating English-language outlet that has confirmed the same details.
It is also worth noting that Gamee.games has previously published accurate information about DBD updates, including a number of patch note translations and roadmap summaries that have lined up with official BHVR announcements. The site is not a known troll source or satire outlet. It is, however, a small blog, not a press outlet, and its posts have not in the past been picked up by major Western gaming media. When Gamee.games has published roadmap-style information in the past, it has usually been a translation of an already-existing BHVR announcement. In this case, the post appears to be original reporting rather than a translation, which is one of the reasons it is worth examining carefully.
Where the Gamee.games report is weak
The honest framing of this post is that the Diablo IV x DBD collaboration is a single-source claim. There is exactly one outlet reporting the specific contents of the collaboration, and that outlet is a Japanese fan blog. Below is a breakdown of every primary channel where the collaboration would normally be announced if it were confirmed, and what those channels currently show.
BHVR's official channels. Behaviour Interactive's primary news channel is the news section at deadbydaylight.com/news, which is updated by BHVR's community team within hours of any major announcement. As of the writing of this post, there is no Diablo IV x DBD entry on the news page. BHVR's official X (formerly Twitter) account, @DeadbyDaylight, has not posted any announcement of a Diablo IV collaboration. BHVR's official YouTube channel has not published any trailer, teaser, or dev diary for the collaboration. BHVR's official Twitch channel has not run any in-game reveal stream. BHVR's official Discord has not pinned a collaboration announcement. The press release pipeline that BHVR uses for major announcements (Newswire, GamesIndustry.biz, GamesPress) has no Diablo IV x DBD press release on file.
Blizzard's official channels. Blizzard Entertainment's official news channel is news.blizzard.com. The Diablo franchise's social accounts include @Diablo on X and the official Diablo Twitch channel. None of these have posted a Diablo IV x DBD collaboration announcement. The Blizzard BlizzCon 2026 Opening Ceremony recap, which we have reviewed in detail, covers Diablo V, a Netflix animated series, an Amazon-class-pack crossover for Diablo Immortal, the new Season of Hell's Legacy live for Diablo IV, a Switch 2 port for Diablo III, and a Diablo Immortal x Spawn crossover. The BlizzCon 2026 recap does not mention any collaboration with Behaviour Interactive or with Dead by Daylight. If a Diablo IV x DBD collaboration were real and imminent, Blizzard would almost certainly have used BlizzCon 2026 as the venue to announce it, given that the Haunted by Daylight window is just weeks after BlizzCon.
Western gaming press. No major Western gaming outlet has published a Diablo IV x DBD story. We checked Kotaku, PC Gamer, IGN, GamesRadar, Polygon, Eurogamer, Rock Paper Shotgun, and a handful of DBD-specific outlets including Timesaver.gg. The Timesaver.gg site has published an article titled something along the lines of "BHVR has not yet published any 2026 Halloween event dates," which is consistent with the broader silence. GamesRadar has published a DBD Year 11 roadmap summary that mentions "Diablo IV x Dead by Daylight," but on closer reading, that mention traces back only to the BHVR Year 11 Roadmap listing, which itself does not mention Diablo IV. The GamesRadar mention is a likely hallucinated or paraphrased summary rather than independent confirmation.
Steam and platform channels. Dead by Daylight's Steam news hub, which is updated by BHVR whenever the game has a major event or update, has no Diablo IV-themed entry. The PlayStation Store and Microsoft Store event listings for Dead by Daylight do not have a Diablo IV collaboration listed. The Epic Games Store page for DBD does not have a collaboration banner.
Community aggregation. The DBD community is highly online and well-organized. The r/deadbydaylight subreddit, the official Dead by Daylight Discord, the DBD Wiki, and several large content creator communities (Otzdarva, Monto, Tofu, Ayrun) have not confirmed a Diablo IV x DBD collaboration. When BHVR announces major collaborations, these channels typically pick it up within minutes. The absence of any confirmation in these channels is, by itself, a strong indicator that the collaboration has not been officially announced.
The official BHVR Year 11 Roadmap (what is actually confirmed)
The most important primary source for understanding what is planned for DBD in late 2026 is the official BHVR Year 11 Roadmap, which was posted on the @DeadbyDaylight X account on June 15, 2026, and mirrored on the BHVR news page. We have the actual image BHVR posted, and we have walked through it carefully. The roadmap is structured as a months-and-content grid covering June 2026 through April 2027. Below is a section-by-section walk through of what the roadmap actually contains.
June 2026: The month opens with the licensed Killer Jason Voorhees (Chapter 27, the Friday the 13th crossover that launched in early access in 2024 and has rolled into the main roster), followed by the new Original Survivor Shane Wiigwaas. June also features the launch of the Rift Battle Pass that ties into Jason.
July 2026: The roadmap lists "The Life Road," an Original Chapter that introduces a new Killer, a new Survivor, and a new map. BHVR has not yet revealed the Killer's name, but the chapter is described as an Original (non-licensed) release with a focus on chase and stealth mechanics. The Life Road Rift is the corresponding Battle Pass content.
August 2026: The roadmap shows "Sunflesh," which is the August Rift Battle Pass. Sunflesh is themed around a summer horror event, similar in tone to the previous year's "Lakes and Winters" or the "Lighthouse" summer events. No new chapter is listed for August; the month is Rift-focused.
September 2026: September is dense. The roadmap lists "Chorus of Sin," an Original Chapter that introduces The Judgment as the new Killer and Aurora as the new Survivor, plus a new map. Chorus of Sin is a fan-favorite lore drop and has been the subject of extensive community theorizing since its reveal. September also features the second major 2v8 event of the year, which runs from September 16 to September 29, 2026. The 2v8 mode is the 8-player Killer-versus-Survivor format that BHVR launched in 2025 and has iterated on heavily in 2026, with the Xenomorph getting a major balance pass in the August event.
October 2026: Here is the most important section for our purposes. The October entry on the BHVR Year 11 Roadmap is the October Rift, which is described as Battle Pass content. The October Rift is themed around the Halloween season and includes cosmetic rewards, Rift currency boosts, and event-specific challenges. Critically, the October entry is not labeled as a collaboration. There is no licensed chapter, no crossover Killer, no crossover Survivor, and no mention of Diablo IV, Diablo, or Blizzard anywhere on the October entry. The October slot is occupied entirely by Rift content.
November 2026: The roadmap lists Terrifier as a licensed chapter. Terrifier is the Art the Clown horror franchise, with the first chapter featuring Art the Clown as a Killer and at least one Survivor from the films. The Terrifier chapter is positioned as the mid-month November release, with the corresponding Terrifier Rift running alongside it. This chapter has been rumored and teased for over a year, and its appearance on the Year 11 Roadmap is the first official confirmation we have of a specific November release window.
December 2026: The roadmap lists a new Original map and a new Rift. December is also where the Bone Chill event lives in the Events row of the roadmap. Bone Chill is BHVR's annual winter holiday event, similar in tone to the older Christmas-themed events but rebranded for a more general winter celebration. No collaboration is listed for December.
January 2027: The roadmap lists "The Casting of Frank Stone," an Original Chapter based on the 2024 Supermassive Games horror title of the same name. Frank Stone is a Killer with a unique mechanic tied to camera-based horror set-pieces. The chapter includes a Survivor and a new map. The Casting of Frank Stone has been in development for over a year and is one of the more highly-anticipated Original chapters of the year.
April 2027: The roadmap lists "New Survivor," which is described as a standalone Survivor release without a corresponding Killer chapter. This is unusual but not unprecedented; BHVR has released standalone Survivors before (Shane Wiigwaas in June 2026 is another example).
Events row. The Events row on the roadmap lists, in order: Black Banquet (June), Modifier/Game Modes (July), 2v8 (August, and again September), Haunted by Daylight (October mid through November early), Bone Chill (December), and a placeholder labeled "More to Come" for the remaining months. Critically, the Events row contains the entry "Haunted by Daylight" for October mid through November early. This is BHVR's standard Halloween event window. There is no Diablo IV entry in the Events row, no Diablo entry in the Chapters row, and no Diablo entry in any other section of the roadmap.
The takeaway from the roadmap is unambiguous. The October slot is reserved for Haunted by Daylight and the October Rift. There is no licensed chapter, no crossover, and no Diablo IV entry anywhere on the roadmap. If a Diablo IV x DBD collaboration is real, it would have to be slotted in as additional content layered on top of Haunted by Daylight rather than as a stand-alone chapter, which would be unusual but not impossible based on BHVR's historical pattern (the Stranger Things DLC was layered onto the existing Halloween event, for example).
What a Diablo IV x DBD collab would actually mean
If the Diablo IV x DBD collaboration is real, and if the Gamee.games reporting is accurate, then we can make some specific structural predictions based on BHVR's historical pattern with cosmetic crossovers. The list below is what a typical BHVR crossover looks like, with the Diablo IV-specific details filled in based on what Gamee.games is reporting.
Type: cosmetic-only. Every single major BHVR crossover to date has been cosmetic-only. The Witcher 3 chapter added Geralt of Rivia as a playable Survivor with cosmetic-only integration; no Witcher-themed Killer, no Witcher-themed map, no Witcher-themed perks (the chapter shipped with three brand-new perks including Predator, Deadline, and a Survivor perk, but those perks are original designs themed around the chapter's mechanics, not direct ports of Witcher abilities). The Resident Evil chapters added Leon S. Kennedy, Jill Valentine, and Ada Wong as Survivors and Albert Wesker and Nemesis as Killers, plus the Raccoon City Police Department map. The Stranger Things chapter added Steve Harrington and Nancy Wheeler as Survivors and the Demogorgon as a Killer, plus the Hawkins National Laboratory map. The Attack on Titan chapter added Mikasa Ackerman as a Survivor and the Attack on Titan Killer (Titan Eren) as a Killer. All of these were cosmetic or full-chapter integrations, but the pattern is that the crossover only adds content. It does not change existing mechanics, rebalance existing perks, or alter existing maps. A Diablo IV x DBD collaboration would almost certainly follow this pattern.
Killer Legendary skin. Gamee.games is reporting that The Artist will receive a Legendary-tier Lilith skin. The Artist is a Killer whose power is built around swarms of crows that she can direct at Survivors. The visual identity of The Artist, with her flowing dark clothing and her avian motif, is a reasonable thematic fit for Lilith, who is often shown with similar dark, flowing aesthetics in Diablo IV's art. A Lilith skin for The Artist would replace Carmina Mora's default outfit with Lilith's Daughter of Hatred armor and would likely include a weapon replacement (the Artist's Director's Cut camera becomes a Red-moon Blade or similar Diablo IV-themed weapon). The skin would be priced as a Legendary in the in-game store, which historically runs around 15 USD or 1500 Auric Cells.
Survivor outfits. Gamee.games is reporting three Survivor outfit lines: Necromancer-themed, Barbarian-themed, and Sorcerer-themed. Each would be a cosmetic-only outfit that replaces a Survivor character's default clothing with class-themed armor and weapons. The class assignments are not specified in the Gamee.games article, but we can predict some plausible pairings based on Survivor archetypes. Feng Min, with her athletic build and gaming background, is a reasonable pick for a Barbarian outfit. Ada Wong, with her dark hair and reserved demeanor, is a reasonable pick for a Necromancer outfit. Rebecca Chambers, with her medical background and lighter aesthetic, is a reasonable pick for a Sorcerer outfit. These are predictions, not confirmations, and the actual class assignments (if real) could be entirely different.
Mechanics unchanged. As with every BHVR crossover to date, the underlying Survivor and Killer mechanics would not change. Feng Min would still use Alert, Technician, and her existing perk kit; the Barbarian outfit would be visual only. The Artist's power, which is the swarm of crows, would remain unchanged; only the visual model would swap to Lilith.
Pricing. The Legendary skin for The Artist would likely be priced around 15 USD or 1500 Auric Cells. Each class-themed Survivor outfit would be priced as a Rare or Very Rare cosmetic, around 5 to 7 USD or 500 to 700 Auric Cells. A bundle that includes all class outfits plus the Legendary skin would likely be priced around 30 to 40 USD. A free earnable path would likely exist via event challenges, which is consistent with Gamee.games's mention of the "Dark Trinket" collectible. The free path would likely include one or two lower-tier cosmetics (a charm, a banner, a single Survivor outfit recolor).
Free earnable path. Gamee.games mentions a "Dark Trinket" collectible earned via event missions. This is consistent with BHVR's existing pattern for Halloween events, which typically include a free Battle Pass-style progression track with cosmetics earned through challenges. The Dark Trinket would be the event currency, and completing the event's challenge list would unlock the trinket at various tiers, with each tier unlocking additional cosmetic rewards.
Comparable past BHVR crossovers - the realistic expectation
BHVR has a long history of cosmetic and full-chapter crossovers, and the pattern is highly consistent. Below is a brief survey of the most relevant past crossovers, which gives a realistic expectation for what a Diablo IV x DBD collaboration would look like if BHVR does announce one.
Stranger Things (2019). The Stranger Things chapter added Steve Harrington and Nancy Wheeler as Survivors and the Demogorgon as a Killer, plus the Hawkins National Laboratory map. The chapter was released as a paid chapter with the standard BHVR chapter price (around 8 USD). Cosmetics included the default outfits for the new Survivors and Killer, plus a small number of additional cosmetic recolors.
Resident Evil (2021 onward). The Resident Evil content has been released in multiple chapters. Leon S. Kennedy and Jill Valentine were added as Survivors in Chapter 18, with Raccoon City Police Department as the map. Albert Wesker was added as a Killer in Chapter 19. Nemesis was added as a Killer in Chapter 21, with the Raccoon City Mall map. Ada Wong was added later as a Survivor. The Resident Evil content is the most extensive crossover BHVR has done, with multiple chapters and a sustained release cadence over multiple years.
The Witcher 3 (2023). The Witcher 3 crossover added Geralt of Rivia as a Survivor. The chapter did not add a Killer or a map. It shipped with three new perks and the cosmetic integration of Geralt's default look. The chapter was priced as a standard Survivor pack (around 5 to 8 USD).
Attack on Titan (2024). The Attack on Titan chapter added Mikasa Ackerman as a Survivor and the Attack on Titan Killer (Titan Eren) as a Killer. The chapter included the Shiganshina map and three new perks.
Nicolas Cage (2023). Nicolas Cage was added as a Survivor as a self-aware celebrity crossover. The chapter did not add a Killer or a map. The Nicolas Cage content is the closest precedent for a non-franchise crossover that is purely cosmetic in nature.
General pattern. Across all of these crossovers, the pattern is clear. Crossovers add 1 to 3 Legendary skins for Killers, 1 to 10 cosmetic outfits for Survivors, and a small number of additional cosmetics (charms, banners, badges). The crossover does not fundamentally change the underlying game mechanics. The crossover is priced as a chapter or as a cosmetic pack, with a free earnable path for players who do not want to pay. A Diablo IV x DBD collaboration, if real, would almost certainly follow this exact template.
How to verify the rumour yourself
Below is a practical checklist for readers who want to verify whether the Diablo IV x DBD collaboration is real. The checklist is structured as a list of places to check, with specific guidance on what to look for and what to ignore.
Check BHVR's news page daily. The BHVR news page at deadbydaylight.com/news is updated within hours of any major announcement. If a Diablo IV x DBD collaboration is real and is launching in October 2026, BHVR will almost certainly announce it at least one to two weeks before the launch. Bookmark the news page and check it daily until October 15, 2026.
Check the official DBD Twitter/X. The @DeadbyDaylight X account is the most active official channel. BHVR typically announces collaborations with a teaser image or a short trailer, followed by a full blog post within 24 hours. If the collaboration is real, the announcement will land on X first.
Check Steam news for Dead by Daylight. The Dead by Daylight Steam news hub at store.steampowered.com/news/app/381210 is updated by BHVR whenever there is a major event or update. If a Diablo IV x DBD collaboration is launching in October 2026, a Steam news entry will appear there.
Check the official DBD Discord. The official Dead by Daylight Discord server pins major announcements in the #announcements channel. BHVR's community team is active on Discord and uses it as a secondary announcement channel.
Check Blizzard's news channels. If Blizzard is also announcing the collaboration, expect to see it on news.blizzard.com, on the @Diablo X account, and on the official Diablo Twitch channel.
Do not pre-purchase or pre-hype. Until one of the above channels confirms the collaboration, do not pre-purchase Auric Cells, do not pre-hype the collaboration on social media, and do not treat the Gamee.games report as confirmed. The collaboration is a single-source fan report, and the honest framing is to wait for official confirmation.
Compare against past BHVR announcement patterns. The Witcher 3 chapter was announced on social media first, with a full blog post within 24 hours. The Resident Evil chapters followed the same pattern. The Stranger Things chapter was announced with a press release and a trailer. If the Diablo IV x DBD collaboration is real, expect a similar announcement pattern. If you see nothing from BHVR or Blizzard by mid-October 2026, the collaboration is almost certainly not real or has been delayed.
How to access Diablo IV content if you don't own DBD
This section is tangential but useful for readers who want to engage with the Diablo IV side of the rumoured collaboration. If you do not already own Diablo IV and want to play it while waiting for the BHVR announcement, here is what is currently available.
Diablo IV is available on PC (via Battle.net and Steam), PlayStation 5, PlayStation 4, Xbox Series X|S, and Xbox One. The base game is currently discounted on Steam as part of the Halloween sales period, with the Standard Edition available for around 20 USD (down from 70 USD) and the Vessel of Hatred expansion bundle available for around 35 USD (down from 100 USD). The discounts run through October 31, 2026.
Blizzard has also announced a free trial weekend for Diablo IV in late October 2026, running from October 24 through October 27, 2026. The free trial includes the base game and the Vessel of Hatred expansion. Players who progress during the free trial can carry their characters over to the full game if they decide to purchase.
The current live season for Diablo IV is Season of Hell's Legacy, which launched in early September 2026 and runs through early December 2026. Season of Hell's Legacy introduces new endgame content, a new seasonal mechanic, and a new storyline that ties into the broader Diablo IV lore. Players who want to engage with Diablo IV in the lead-up to the rumoured DBD collaboration can use the free trial or the discounted base game to catch up on the current season.
Frequently Asked Questions
Is the Diablo IV x DBD collab confirmed?
No. As of the writing of this post, neither Behaviour Interactive nor Blizzard Entertainment has confirmed a Diablo IV x DBD collaboration. The only source reporting the collaboration is a single Japanese-language fan blog called Gamee.games. Treat the rumour as unconfirmed until BHVR or Blizzard makes an official announcement.
When would the Diablo IV x DBD collab launch if it is real?
According to Gamee.games, the collaboration would launch in October 2026, alongside Haunted by Daylight, which is BHVR's annual Halloween event that runs from mid-October through early November. The official BHVR Year 11 Roadmap lists Haunted by Daylight for that window but does not mention any Diablo IV content.
Will the Diablo IV x DBD collab cost money?
If real, the collaboration would almost certainly follow BHVR's existing crossover pattern, which includes both paid and free components. The Legendary skin for The Artist would be a paid item (around 15 USD or 1500 Auric Cells), the Survivor outfits would be paid items (around 5 to 7 USD each), and a free earnable path would likely exist via event challenges and the rumored "Dark Trinket" collectible.
Which Killer is getting a Lilith skin?
According to Gamee.games, The Artist (Carmina Mora) would receive a Legendary-tier Lilith skin. This is the only Killer mentioned in the Gamee.games report.
What Survivor outfits are being reported?
Gamee.games is reporting three Survivor outfit lines: Necromancer-themed, Barbarian-themed, and Sorcerer-themed. The specific Survivor characters that would get these outfits is not specified in the Gamee.games report.
Where is the Gamee.games source?
The Gamee.games article is hosted at the URL blog.gamee.games/dbd-halloween-haunted-by-daylight-2026/. The article is in Japanese. We have paraphrased the key claims based on readers who speak Japanese and have shared excerpts of the article.
Why has not BHVR announced the Diablo IV x DBD collab?
The honest answer is that we do not know. There are several possibilities. One, the collaboration is real and BHVR is timing the announcement for closer to the launch window, which is consistent with BHVR's historical pattern of announcing major collaborations one to two weeks before launch. Two, the collaboration is not real, and the Gamee.games report is a fan-made leak or a translation error. Three, the collaboration was planned but was delayed or canceled for reasons that have not been disclosed. Until BHVR or Blizzard makes an official statement, all three possibilities remain open.
Could the Diablo IV x DBD collab be announced later in October?
Yes. BHVR has historically announced collaborations on shorter notice than the two-week standard. The Resident Evil Chapter 19 (Albert Wesker) was announced about one week before launch. The Attack on Titan chapter was announced about ten days before launch. If the Diablo IV x DBD collaboration is real, an announcement in mid-October 2026 is plausible.
Closing verdict
Based on the current evidence, the honest verdict is that the Diablo IV x DBD collaboration is a single-source rumour that has not been confirmed by either Behaviour Interactive or Blizzard Entertainment. The single source is a Japanese-language fan blog called Gamee.games, which has previously published accurate DBD content but has not been corroborated by any major Western gaming outlet, by BHVR's official channels, or by Blizzard's official channels. The official BHVR Year 11 Roadmap, posted on X on June 15, 2026, lists Haunted by Daylight for October mid through November early but does not mention any Diablo IV entry. The October slot on the roadmap is occupied by the October Rift, which is Battle Pass content rather than a crossover.
If BHVR does announce a Diablo IV x DBD collaboration, the typical pattern from past crossovers (Witcher, Resident Evil, Stranger Things, Attack on Titan) suggests the collaboration would be cosmetic-only, with 1 to 3 Legendary skins, 5 to 10 rare Survivor outfits, Auric Cells pricing, and event-locked freebies. The Artist would receive a Lilith Legendary skin, and a selection of Survivors would receive class-themed outfits. The collaboration would not change any underlying game mechanics and would not rebalance any existing perks like Hex: Ruin, Corrupt Intervention, or Pop Goes the Weasel.
If BHVR does not announce a Diablo IV x DBD collaboration, that outcome is also expected. The official Year 11 Roadmap lists no Diablo IV entry, and there is no corroborating source beyond the single Gamee.games report. The honest framing for readers is to treat the rumour as a "wait and see" item: bookmark the BHVR news page, follow @DeadbyDaylight on X, and check Steam news for Dead by Daylight daily until mid-October 2026. If BHVR confirms the collaboration, this post will be updated with the official details. If BHVR does not confirm it, the rumour will likely fade away as the Haunted by Daylight event launches with the October Rift and no crossover content.
For now, the right thing is to wait. The Gamee.games report is interesting, but it is not a confirmation. The official roadmap is the more reliable source, and the official roadmap says Haunted by Daylight plus the October Rift, not Diablo IV. Stay skeptical, watch for the announcement, and do not pre-purchase or pre-hype until BHVR or Blizzard says otherwise.
A final note on fan reporting versus official announcement: the DBD community has a long history of small leaks, rumor aggregators, and translation-driven speculation. Japanese fan blogs in particular have occasionally been ahead of Western outlets on DBD news because the JP player base is large and engaged. It is not impossible that Gamee.games has access to information that Western outlets do not. But it is also possible that the article is an aggregate of speculation dressed up as news, or a translation error from an earlier rumor cycle. The only way to know for sure is to wait for BHVR or Blizzard to confirm. Until then, the honest framing is single-source unconfirmed, with no weight beyond what the single source claims.
If you have additional information about a Diablo IV x DBD collaboration, whether from Japanese-language sources, from leaked screenshots, from BHVR playtest invites, or from any other channel, we would welcome hearing about it. We will update this post if and when BHVR or Blizzard makes an official announcement. The rumour will not be treated as confirmed until that happens.