Apple today released tvOS 12.0.1 to the public. The company does not mention any new notable changes, so it is likely that this is a minor bug fix and the stability improvements are being updated.
Today's release comes a week after the release of tvOS 12.0, which provided support for Dolby Atmos audio, new space needs and zero sign-on for a small number of cable providers.
tvOS 12.0.1 is available as an over-the-air update for Apple TV 4th generation and Apple TV 4K. Go to Settings gt System gt Software Update to download. Users with automatic updates should update their course soon.