Apple released iOS 6.1 for iPhone, iPad and iPod touch owners today, and Apple TV has received an update as well. The biggest addition to Apple TV v5.2 is support for Bluetooth keyboards, but Apple also brought improvements to iTunes Match and Up Next, as well as iCloud support.
Apple TV owners can now pair any Bluetooth enabled keyboard with the device, allowing for easier typing than with the sleek but awkward remote control.
Apple TV 5.2 update is now available for download simply by heading to the Settings menu and then to “Update Software” on your Apple TV. The update is compatible with the 2nd and 3rd generations of the Apple TV.
Via [Apple Support Site]