According to appleinsider.com they are working on a new "set to box". According to some people it will have a A6 chip & run ios apps without airplay. If that ture will apple flip the switch allowing it on the 3 or will we have to buy the new one?
Mark Gurman @markgurman
Perhaps this new Apple TV talk is simply updated packaging and the new OS. Perhaps iTunes Radio is significant enough to warrant that.