Last year, the company teased Halo Infinite and that title will be a launch game for the upcoming hardware. With a brand new game engine, the team behind the game is trying to make the story adapt to decisions the user makes and the game may have more RPG (role-playing game) elements than prior versions of the series.
Figured there should be a thread about this specific bit of info
https://www.thurrott.com/xbox/200039/microsoft-to-talk-next-gen-consoles-at-e3-2019#