Called Prey Mooncrash it's being described as "an infinitely replayable rogue-like campaign". Available as a standalone release or as DLC for the base game, it tasks players with attempting to survive and escape from a secret Moon base.

In Prey: Mooncrash, fight overwhelming odds to escape the secret TranStar moon base where the enemies you encounter, the hazards you face, the goals you complete, and the loot you collect are different each time you play. With changing environments as dangerous as they are dynamic, multiple unlockable characters each with their own set of specialized and upgradable skills, and Typhon threats armed with a unique array of deadly characteristics, the Mooncrash campaign for Prey will offer a fun, infinitely replayable challenge to test even the most skilled players.

Also the base game is getting an update with three new modes (or redesign of how you can play).

Story Mode, for those looking to casually experience the game’s immersive narrative; Survival Mode, which will put your veteran cosmonaut to the test with hardcore hazards like oxygen levels and bleeding; and New Game +, which gives all players a whole new reason to return to Prey after they complete the game.

Very cool, as Prey remains one of the most underrated gems from 2017. Bethesda also teased a new Prey multiplayer mode called Typhon Hunter that pits a singe survivor against a team of five Mimic aliens who can hide in plain site taking on the form of everyday space objects.