AsThe Vergepoints out, Twitch integration for the Xbox One was removed back in 2017.
This return looks to be similar to the previous integration and includes features like overlays and webcam support.
If you navigate out of the game during a stream, they’ll just see a pause screen.
Microsoft
The catch (for the time being) is the membership requirement.
Then you have to be selected for the invite-onlyAlpha Skip-Aheadring, which gets to preview updates before other insiders.
So you might be in for a bit of a wait.
Microsoft