tvOS 12.2, a free update, can be downloaded over the air through the Settings app on the Apple TV by going to System --> Software Update. Apple TV owners who have automatic software updates turned on will be upgraded to tvOS 12.2 automatically.
tvOS 12.2, when paired with iOS 12.2, is designed to allow users to ask Siri to play specific media on an Apple TV from an iOS device. You can, for example, ask Siri to play Modern Family on the TV in the living room, or Pitch Perfect on the TV in the bedroom. This feature is available for music, TV shows, and movies.
No other new features were discovered during the tvOS 12.2 beta testing period, and because Apple does not provide release notes for tvOS updates, it is difficult to determine what else might be new in the operating system.
tvOS updates are often minor in scale, however, so the update may primarily focus on bug fixes and other small changes rather than major new features.