tvOS 14.7 does not bring anything new for the Apple TV 4K / HD
Will my Apple TV work with tvOS 14? | iMore
Amazon.com: Apple TV for TVOS 14.3 User Guide : The Best Comprehensive User Guide that will expose to you all the Functions and Purpose of Apple TV 4k eBook: Williams, Alexander: Kindle
Hands-On With tvOS 14: Picture in Picture, 4K YouTube, HomeKit and More - MacRumors
Apple TV gets YouTube playback in 4K with tvOS 14 | AppleInsider
Apple TV 4K will finally support 4K YouTube videos with tvOS 14 update - Neowin
tvOS 14 Beta 2 Now Available for Apple TV
Apple TV YouTube App Gets 4K Support For Devices Running tvOS 14 - Tech
tvOS 14 now available for your Apple TV: deeper HomeKit integration, 4K YouTube, Picture-in-Picture - 9to5Mac : r/appletv
How to Downgrade tvOS 14 to tvOS 13 on Apple TV HD
Apple TV 4K can finally play YouTube in 4K with tvOS 14
Check out these 9 new Apple TV features in tvOS 14