Apple has released tvOS 17.3 tvOS 17.3. This new release is primarily bug fixes along with smaller improvements. Apple a few weeks ago shipped tvOS 17.2 which packed the reworked Apple TV app.
tvOS 17.3 can be downloaded using the Settings app on the Apple TV. Go to System > Software Update to get the new software. Apple TV owners who have automatic software updates activated should be upgraded to tvOS 17.3 automatically.
