The release candidate for tvOS 16.4 has been released to registered developers.
Apple Seeds Release Candidate Version of tvOS 16.4 to Developers
Apple today seeded the release candidate version of an upcoming tvOS 16.4 update to developers for testing purposes, with the update coming a week after the launch of the fourth tvOS 16.4 beta.
Apple Seeds Release Candidate Version of tvOS 16.4 to Developers
Registered developers are able to download the tvOS 16.4 update by downloading a profile on the Apple TV using Xcode.