The expected feature for Apple TV YouTube!
One of the newest features Apple has released is tvOS 14. Apple TV 4K users have gradually opened access to the expected feature by looking at the situation after Apple TV 4K users realize that support is not available.
Apple TV YouTube application has gotten the expected feature!
Immediately after posting footage with 4K YouTube videos being played by a user named Flatpannels HD on Reddit, many people shared that they saw 4K playback options in the YouTube app on tvOS 14, tvOS 14.0.1, and tvOS 14.2. 1080p video is not watched in 4K for now.
No one knows at the moment whether the lack of HDR is temporary or is a limitation on the 4K Apple TV.