It seems to be a minor update as there are no new features called out in the release notes (opens in new tab) but it does address a few bugs.

Today, Apple released the third developer beta of tvOS 16.1 to developers. September 27, 2022: Apple launches the third developer beta of tvOS 16.1

If you already have a previous tvOS beta installed, or followed the instructions below to install the beta profile for the update, head to System > Software Updates and download away. Today, Apple released the fourth developer beta of tvOS 16.1 to developers. October 4, 2022: Apple launches the fourth developer beta of tvOS 16.1

Today, Apple released the fifth developer beta of tvOS 16.1 to developers. October 11, 2022: Apple launches the fifth developer beta of tvOS 16.1 It seems to be a minor update as there are no new features called out in the release notes (opens in new tab). Today, Apple released the Release Candidate of tvOS 16.1 to developers. October 18, 2022: Apple launches the Release Candidate of tvOS 16.1

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