There have been rumors for some time about the possibility of the release of a game controller add on for the iPhone and iPod Touch. An add on would give the lacking analog stick(s) that some games need to provide a great experience. Toucharcade has posted a picture it recieved of the Belkin Joypod. The joypod encompasses the iPod/iPhone with an analog stick on the left and 4 buttons on the right, not unlike the Sony PSP.
Apple themselves may have a similar contraption add-on themselves and maybe the Belkin is in response, but probably not. It could be Belkin is just preparing itself for that John Carmack game coming to the iPhone and iPod Touch. Regardless of who makes it, the add on would be welcomed especially if it is under 10 dollars and widely used by game developers.