Down at the bottom of his post about "devices with capabilities duplicated to some degree by the iPhone," Jason Kottke appends this footnote:
You've got to wonder when Apple is going to change the name of the iPhone. The phone part of the device increasingly seems like an afterthought, not the main attraction. The main benefit of the device is that it does everything. How do you choose a name for the device that has everything? Hell if I know. But as far as the timing goes, I'd guess that the name change will happen with next year's introduction of the new model. The current progression of names -- iPhone, iPhone 3G, iPhone 3GS -- has nowhere else to go (iPhone 3GS Plus isn't Apple's style).
I've thought from the outset that Apple missed an opportunity with the iPhone name, which sounds like a brand extension of the iPod rather than a breakthrough. But that's often what you end up with when you do all your name development in house.