Maybe HTC, Samsung, Nokia et al have come so far in the last five years because they had no choice. If you look at Android phones from 5 years ago, they were mostly shit. The original iPhone was a huge departure from where mobile phones sat 5 years ago.

Does Apple need to change up the look of iOS, yeah probably. But they won't make a radical departure from where they are right now. They are still selling the phone that they built 3 generations ago, and they're selling it well. I'd say that the vacuum chamber says iOS is stale, but the consumer does not.