Developer Owlcat Games is back with the first teaser for The Infinite Museion DLC for turn-based RPG Warhammer 40,000: Rogue Trader. Premium DLC #3, The Infinite Museion is expected to arrive between April and June 2026. Similar to Void Shadows and Lex Imperialis, the new DLC features around 15 hours of content, new mechanics & locations, and a new companion.
Delve into a secret vault curated by Trazyn the Infinite himself. Discover Trazyn’s obsession with the Von Valancius dynasty, and choose whether to disrupt or fulfill his plans. Explore a glimpse of his fabled collection, claim priceless relics, and face off against guardians that defy understanding. A new companion joins your retinue with a distinct combat style that reshapes battlefield tactics. This expansion brings a new questline, a new mechanic — implants — that can be used strategically in battle, and a deeper dive into Necron conflicts.
You can purchase it separately or acquire it as a part of Season Pass 2, which will also grant you access to DLC #IV, Processional of the Damned, once it’s out. The slated release window for the last currently announced DLC is July to September 2026:
Venture into the Processional — a massive, otherworldly graveyard of ships lost to the void. What begins as a search for riches turns into a descent into the unknown. Navigate shifting corridors, avoid ancient traps, and uncover strange truths that defy logic. A new companion joins your crew — someone shaped by this impossible place. This expansion introduces a new story, a mysterious new region, unique enemies and some fresh gameplay mechanics.
