Owlcat has revealed a release window for The Expanse: Osiris Reborn, its Mass Effect‑inspired sci‑fi RPG, targeting spring 2027. The studio also confirmed a closed beta scheduled for next month and reiterated plans to bring the title to Xbox Game Pass.

The closed beta will be limited to players who have pre‑purchased the higher‑tier editions of the game. Exact dates and eligibility details will be shared by Owlcat ahead of the test, with participating players expected to receive instructions from the publisher.

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Owlcat has additionally promised that Osiris Reborn will appear on Xbox Game Pass. The developer framed the Game Pass commitment alongside the wider commercial rollout, but further particulars on timing and platform coverage remain subject to future announcements.

The Expanse: Osiris Reborn aims to blend party‑based roleplaying with narrative choices in a licensed sci‑fi setting. Owlcat, best known for its Pathfinder RPG adaptations, previously attracted attention for leaning into Mass Effect‑style squad dynamics and branching storylines.

Eurogamer reported the initial details on the release window, closed beta and Game Pass promise.