Apple has released a new update for the generation 2 and 3 Apple TV models. The update allows movies and TV show previews from the iTunes Store to be viewed in HD and fixes a few other minor issues.
Apple TV Software Update 5.0.1
iTunes previews – Previews for movies and TV shows from the iTunes Store can now be viewed in HD.
AirPlay – Fixes an issue that caused some iOS apps to have trouble connecting via AirPlay.
Home Sharing – Improves the reliability of Home Sharing connections.
Netflix – Addresses an issue affecting Netflix login and navigation….
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Apple Updates Apple TV to Version 5.0.1
Jordan Golson – macrumors.com