Apple has just released Apple TV software update 5.2 for the 2nd and 3rd generation Apple TV, adding Bluetooth keyboard support, iTunes in the Cloud and AirPlay audio for videos. The update also includes some performance and stability improvements with the iTunes Store, AirPlay, Netflix, iTunes Match, and wired Ethernet connections.
Update: MuscleNerd has just confirmed that Apple TV 2 will be covered by the iOS 6.1 jailbreak.
iOS hacker @MuscleNerd has confirmed on Twitter that the upcoming untethered iOS 6.1 jailbreak will support all iOS 6.1 compatible devices, except Apple TV 3. If Apple releases a software update for Apple TV 2 in time, which MuscleNerd claims is very likely, this device will also be supported. Untethered jailbreak for iOS 6.1 is expected to be released by evad3rs team just after Apple releases the latest version of its mobile OS to the public.