honestly i dont think apple had these thoughs in mind when FIRSt developing the iPod Touch.
In fact steve made it clear that he only considered the iPod Touch a high-end iPod.
We hang on every syllable that Steve utters. If he had said anything other than that, he would have raised expectations beyond what he was able to deliver on in the near future. Despite what he said, it was clear that the touch was the basis for something big.
I agree with mozmac, Apple keeps assembling pieces to the grand puzzle. I wish I knew what is is.