Where is the swiveling hot-shoe mount for the iPhone, displaying the 1DM3 Live View? Now that would be a terrific tool and way cool. A medium format digital back with live view on an iPhone? Whoah! Doubling the screen resolution would be a nice plus, too.
The iPhone is a superb handheld device, not just a phone. It has all sorts of useful applications. I want one as a home theatre remote-control, a handheld GPS device, a broadcast TV, etc. All of this is feasible and will be forthcoming if Apple understands what it has created: a leap to the next generation of truly useful handheld devices.