MacRumors published a story that Apple has released the third beta of tvOS 16.6 to registered developers.

Apple Seeds Third Beta of tvOS 16.6 to Developers

Apple today seeded the third beta of an upcoming tvOS 16.6 update to developers for testing purposes, with the beta coming two weeks after the release of the second beta.

Registered developers are able to download the tvOS 16.6 update by downloading a profile on the Apple TV using Xcode.

Apple Seeds Third Beta of tvOS 16.6 to Developers