The Apple TV set-top box was updated to software version 5.2 on Monday, adding enhanced support for iTunes in the Cloud and the ability to connect a Bluetooth keyboard, while also hinting at a minor hardware refresh. From Apple Insider:

Users can download the update directly to their device by choosing the Settings application on the Apple TV, then choosing "General," and "Software Update." The full list of changes in the update, according to Apple, are:

iTunes in the Cloud: Brows 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.

 Apple TV software update adds Bluetooth keyboard support, hints at new hardware