Apple today pushed out a new 4.4.3 software update for the Apple TV, although the company has yet to specify what improvements are included in the update.
Update: Apple has updated its release notes to reveal that the 4.4.3 update adds support for Netflix streaming in Mexico and an audio output issue when the connected television set is turned off.
Netflix: Added support for Netflix in Mexico.
Audio Output: Addresses an issue in which audio may not play through the optical port when the TV is turned off.
Article Link: Apple Releases 4.4.3 Software Update for Apple TV [Updated]