iOS 7 appears to be a mostly incremental upgrade. Many of the features (wallpapers, flat icons) either borrow from competitors or maintain parity with existing competition. What is lost in the debate over whether or not iOS 7 is ugly, unnecessary, beautiful simplicity, or a performance improvement is that it might not even matter. Apple has the best ecosystem to date. Developers know that Apple customers are more predisposed to purchase apps versus accept a free version full of ads. Many consumers have also invested a lot of money in media, such as music, apps, movies, and books. Neither one of these parties will outright reject the platform and ecosystem over a few icons looking too flat. Long term though, this may signal that Apple is not the innovator it was. It may also mean the end of the mystique that inspired such loyalty from the customer base. Is Apple still the gold standard for mobile? Only time will tell.

http://www.pcmag.com/article2/0,2817,2420161,00.asp