MacRumors published a story that Apple has released the fourth beta of tvOS 16.1 to registered developers.

Apple Seeds Fourth Beta of tvOS 16.1 to Developers

Apple today seeded the fourth beta of an upcoming tvOS 16.1 update to developers for testing purposes, with the beta coming one week after the launch of the third beta.

tvOS updates are typically minor, focusing on under-the-hood bug fixes and improvements rather than outward-facing changes. No new features were found in the first beta of tvOS 16.1.

  Apple Seeds Fourth Beta of tvOS 16.1 to Developers