Only a few days ago Apple was rumored to be developing a Joypad for iOS devices and Apple TV. Whether or not the ever becomes a reality is another question.
It would make sense to most for Apple to take advantage of the headway iOS has made with casual gaming and release an SDK for Apple TV. If this happens, a controller other than iPhones or iPads would be necessary for most games.
Since today is April 1st, we found a video of a new gaming console called the Apple iPlay. Happy April Fools Day!