I would argue this is Apple dumbing down the current firmware to make it that much more amazing when it comes out. Plus in the current model the battery would be killed, but with not much being added to the next iPhone, the battery life is bound to improve alot, so they would have the room to add this function. I would also argue that video chat would be absolutely amazing and a mind blowing feature. Think of it, a mobile conference room. Also, think keynote wise, Steve could stand on stage and talk to Wos in the audience or another building or..... country! Think of the possibilities and press that would capture. I know I sound arrogant when I say this, but I guarantee video chat will be in the next iPhone.