The iControlPad, like many other controllers designed around adding buttons to the iPhone, seemed long forgotten (Anyone remember some of these designs?). It's pretty often we see designs similar to this that never really seem to make it beyond a few concept renders or a YouTube video.
The iControlPad, however, is actually going to be available this month. Pre-orders have already started. We've talked about the idea of adding buttons to iDevices, but always figured that it would be tough to do without developer support. As it is, this $75 unit does not work with all games and emulators. On the plus side, it works with Bluetooth devices, meaning your smartphones and even some computers will be able to use it.
Below are the specs for the controller according to the official website: