Warhammer 40,000: Rogue Trader's next story expansion now has a date. The Infinite Museion is listed for June 11 on Steam, and PlayStation has released a PS5 trailer for the DLC from Owlcat Games.
The expansion is the third major story add-on for Rogue Trader, Owlcat's turn-based CRPG set in the Koronus Expanse. Its Steam page frames The Infinite Museion around the vault of Trazyn the Infinite, the Necron collector whose whole deal makes him one of the stranger and more dangerous figures to build a role-playing scenario around.
The useful promise here is not simply another quest chain. Rogue Trader already works best when it lets players negotiate ugly choices across faith, profit and alien power, and a Trazyn-centered vault is a natural fit for that. The DLC sends players after artefacts tied to the von Valancius dynasty, while its setup asks whether they will work with Trazyn, resist him or try to outmaneuver him.
The Steam listing also names a new companion: Eogunn Februs, a Tech-Priest Manipulus described as a support specialist with technological abilities and a shadowed past. Owlcat previously introduced Februs in an official Rogue Trader news post, tying him directly to The Infinite Museion before the release-date push.
The mechanical wrinkle is augmentation. Steam describes a new system that lets players replace damaged flesh with bionics, changing resilience and tactical options as the expansion progresses. In a Warhammer 40,000 CRPG, that is more than cosmetic flavor. Augmentation sits right on the fault line between character buildcraft, body horror and the Imperium's warped relationship with technology.
Owlcat first outlined Season Pass 2 last year, saying its third major addition would take players into a Necron vault curated by Trazyn, challenge ancient guardians and uncover relics connected to the Von Valancius legacy. At the time, the studio said each of the two Season Pass 2 expansions would add a new companion, new quests integrated into the main story, new mechanics and around 15 hours of gameplay.
The timing also keeps Rogue Trader in a busy Warhammer window. Gamers Now covered Warhammer 40,000: Mechanicus II launching with playable Necrons this week, while other recent Warhammer games have been pushing racing, tactics and strategy in different directions. Rogue Trader's lane is narrower, but it is also distinct: party-based CRPG decision-making inside a setting that usually reaches games through tactics, shooters or tabletop adaptation.
The confirmed Steam date is June 11, 2026. PlayStation's official trailer is PS5-branded, while earlier official materials for Rogue Trader list the base game on PC storefronts, PlayStation, Xbox and Nintendo Switch 2. Steam currently says The Infinite Museion is not yet available and can be wishlisted ahead of release.