YouTube on Xbox One X is now in 4K! Snag the update by starting the app or downloading it!

The official YouTube app is now available to stream 4K content to Xbox One X consoles. In addition to 4K, the new YouTube app now features 60 FPS playback. The app has reached the Microsoft Store, but it is available as a separate download instead of as an update to the existing version.

YouTube app page on Microsoft Store