That's the advantage to great design, it doesn't need to change. Every year Android/Windows comes out with a new design that's finally supposed to make it not suck. Go find a 1984 Mac, look into the top right hand corner, whats there?
Agreed, I don't see the need for change, the incremental updates have gotten us to the point where iOS functions very well. If you're looking for innovative UI there are over 600,000 apps, many of them with amazing and novel UIs very well suited to the app's function.
