Hot on the heels of the iOS 11.2 release, Apple has flipped the switch on tvOS 11.2. You can download it now on the Apple TV 4th gen and Apple TV 4K. Go to the Settings app and navigate to System > Software Update.
This update adds two significant features. First, the TV app now has a Sports tab. You can pick your favorite teams and see schedules, live games, and (optionally) scores. Go to Settings > Apps > TV to turn off sports scores in order to prevent spoilers.