Apple today released the tvOS 15.5 Beta 3 update, version number (19L5562e), to developers for testing purposes, seven days after the release of Beta 2.
Developers can download the new tvOS 15.5 beta by downloading configuration files to Apple TV using Xcode.
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TvOS updates are generally small in scale and focus on low-level bug fixes and improvements rather than major external-facing changes. So far, we haven’t found any new features in tvOS 15.5.