Apple released iOS / iPadOS 16.4 Developer Preview Beta 2 in addition to the tvOS 16.4 Developer Preview Beta 2 update with the specific version number (20L5474e), two weeks after the last Beta update.
Registered developers can download the tvOS 16.4 update by using Xcode to download a profile on Apple TV.
tvOS updates are typically minor, focusing on internal bug fixes and improvements rather than significant external changes. No significant Beta changes have been identified yet.
Apple has shared some information about the official tvOS release in its tvOS support documentation, which is updated after each tvOS release.
