That you don't have a revolution like the first iPhone doesn't mean it's ever "done". When you sum up all the boring, evolutionary changes over the last 10 years you end up with something pretty outstanding. Especially if you compare it to the previous 10 years before that (back when operators more or less decided the feature set of the phones they would sell).

I doubt there will be another big revolution in personal computing until you have direct brain communication (implants or sensors/transmitters that look unobtrusive).

A cell phone iWatch could change its usecase quite substantially, but whether it'll find new uses remains to be seen.