Apple has released iOS 5.2 firmware for the Apple TV featuring Bluetooth support, Up Next, and iTunes in the Cloud.
iTunes in the Cloud:
Browse and play your purchased iTunes music directly from iCloud.
Up Next:
See upcoming songs when playing music, and easily choose what plays next.
Bluetooth Keyboard:
Use your Apple Wireless Keyboard to control your Apple TV.
You can get the latest Apple TV firmware from here.
iTunes in the Cloud:
Browse and play your purchased iTunes music directly from iCloud.
Up Next:
See upcoming songs when playing music, and easily choose what plays next.
Bluetooth Keyboard:
Use your Apple Wireless Keyboard to control your Apple TV.
You can get the latest Apple TV firmware from here.