Yesterday, Apple introduced a small feature update and bugfix release of AppleTV, 2.2. The new features included :
HD TV Show Playback and Purchase
eMusic Video playlists
Genius playlists
On-the-Go playlists
Standby Option
The security issues and bugfixes weren't so good, however. Many users found their AppleTVs in an endless reboot loop (Infinite Loop?!) after the upgrade. Why? No one knows for sure. They could restore to factory settings but had no luck trying an upgrade again.