[Kadin]

I think that it would be more likely that they'd just drop OS X in that scenario, and just have a beefed-up version of iOS with better keyboard and touchpad support.

The number of users who would actually benefit from OS X vs iOS, but would not be ticked off at an inability to dual boot Windows or run any legacy applications, is very small indeed.

iOS for ARM and OS X for x86 seems likely to remain in the future, but I do think that Apple could do a netbook or dockable tablet running ARM/iOS if they really thought there was demand. I'm not sure there is, but if the product was good enough they have shown in the past an ability to manufacture demand where it didn't exist previously...