Apple today released a new update for tvOS, the operating system designed to run on the fourth-generation Apple TV. tvOS 9.2.1 is a minor update that comes a month after the launch of tvOS 9.2, a more significant update that introduced a range of features from Bluetooth keyboard support and dictation to Siri search for the App Store and app folders.
The new tvOS 9.2.1 update can be downloaded over the air through the Settings app on the Apple TV by going to System --> Software Update. Those who have automatic software updates turned on will be upgraded to the new 9.2.1 operating system automatically.
As a minor 9.x.x update, tvOS 9.2.1 focuses on bug fixes and performance updates to address issues discovered since the release of tvOS 9.2, and no major outward-facing changes were discovered during the beta testing process.