Yes, but the basics of computing (text input, pointing, selecting) haven't been worked out for the new paradigm. Like you point out, how information superiority and affordance work even in standalone applications hasn't really been solved. Without tactile touch components, it's very hard to interact with spatial data (one of the reasons CAD is so hard to learn).
I'd suggest that we'll need another 'mother of all demos' that solve some of these HCI problems, not just the fit and finish upgrade that Apple typically offers.
I'd suggest that we'll need another 'mother of all demos' that solve some of these HCI problems, not just the fit and finish upgrade that Apple typically offers.