https://www.pcgamer.com/the-outer-worlds-and-control-will-launch-on-the-epic-store-not-steam/

During its GDC 2019 Unreal keynote this morning, Epic announced that it has partnered with 2K's Private Division label to distribute The Outer Worlds and Ancestors: The Humankind Odyssey on the Epic Games Store. PC Gamer has learned that The Outer Worlds will also release on the Microsoft Store, but will not appear on other stores on PC for at least a year—that includes Steam. 

The Outer Worlds quickly became one of the most-anticipated games after its announcement in December, an "exuberantly sci-fi" FPS RPG hybrid from some of the original creators of Fallout. In some ways it represents the biggest get so far for Epic's growing platform. Wes played it in December, saying "the setting has an invigorating freshness and personality to it for this type of game, and I think it's high time we got a campier, more sarcastic Firefly to Mass Effect's wannabe Star Trek."