The next iPhone will be, I am told, a clear piece of glass (er, Gorilla Glass sandwich with other polycarbonates for being pretty shatter resistant if dropped) with a next-generation OLED screen (I have several sources confirming this). You pop it into a headset which has eye sensors on it, which enables the next iPhone to have a higher apparent frame rate and polygon count than a PC with a Nvidia 1080 card in it.
Don’t know how true this is, but it’s inevitable. And rumors have been circulating all year, that the next iPhone, which will be the 10th anniversary iPhone, will be a big deal. This one paragraph continues to pour into that rumor.