tvOS 11.2 can be downloaded by air through the Apple TV configuration application by going to System -> Software Update. Apple TV owners who have automatic software updates activated will automatically update to TVOS 11.2.
According to the release notes provided during the beta test period, tvOS 11.2 enables a new AVDisplayManager feature for developers, which is designed to allow the device to automatically change the video display modes to match the frame rate native and dynamic range of video content.
tvOS 11.2 brings a new Sports section to the dedicated TV application, which offers access to live sports games through integration with the ESPN application. The Sports application can be accessed through a new "Sports" tab at the bottom of the application, and offers customized content according to the team's preferences and current sports seasons.
The update also includes support for changing the 4K screen output from Apple TV to SDR for applications that are linked to the GPU when running on HDR and re-enter the Not seen category in Share at home for movies, programs of TV and domestic videos.