Apple comes soon with a new version of mediastreamer Apple TV. This is evident from the release of iOS 6.1 firmware for an unknown device. The new Apple TV may have an A5X on board, the soc from the iPad 3 a year ago.
That the new Apple TV has a new soc contains, was discovered by Anandtech in the Restore.plist file in the iOS 6.1 firmware of the unknown device, by Apple referred to as Apple TV 3,2. The soc seems to be a small upgrade to the Apple A5 from the Apple TV, making it obvious that it comes to the A5X. This soc like the A5 two Cortex A9 processor cores, but there are four PowerVR SGX543 gpu cores are present instead of two.
The new Apple TV is also slightly smaller, as apparent from documents of certification body FCC. It is unclear why Apple the firmware for an unannounced device online. Probably wanted to Apple the upgrade is still running or follows the announcement has already soon and it was for an earlier time on the planning. In the iOS 6.1 firmware were also references to a device with a storage capacity of 128GB, after which Apple the iPad 4 128GB presented. If and when Apple itself is the new version of the Apple TV is going to present, is unclear.