https://www.gamespot.com/articles/xbox-game-pass-will-now-feature-first-party-xbox-o/1100-6456277/

Microsoft has announced it is expanding Xbox Game Pass and will start releasing first-party Xbox One exclusives through the subscription service. Xbox Game Pass was launched last year and offers players unlimited download access to more than 100 Xbox One games for a monthly cost. Now it seems the service will be a cornerstone of Xbox's distribution plans going forward.

The first major game to be released on Xbox Game Pass the same day as its regular release will be Sea of Thieves, the much-anticipated open-world pirate game exclusive for Xbox One and PC. When it becomes available for purchase in a traditional fashion on March 20, Game Pass subscribers will get access on Xbox One. While they don't have set release dates yet, both State of Decay 2 and Crackdown 3 were mentioned as other Xbox One exclusives that will be coming to Xbox Game Pass at release. All games will still be available for purchase normally.