„iOS 5 appears to unlock new 1080p capabilities for the iPad 2, allowing video in the 1080p format to be synced and played directly on the device. While the iPad 2 is of course unable to directly display full 1080p content on its own screen, many users are interested in outputting such content to larger screens, and it also opens the door to a true 1080p Apple TV. “
http://www.9to5mac.com/71325/apple-to-finally-deliver-1080p-video-playback-on-ios-devices-with-ios-5/