iOS 7 was a simplification of iOS in more ways than just getting rid of some skeuomorphic elements; It was a redesign of iOS from ground up. But it also felt a little short on features. But Apple has been adding more and more features to iOS 7, iOS 8 and 9, like continuity, extensibility, share sheets, etc. With iOS 10 that was announced a couple of weeks ago on in WWDC, Apple brings some radical new features to iOS. A lot of these features also integrate themselves into the iOS with some bold design cues as well.
A lot of them also heavily use iPhone's 3D Touch (which I can't live without for many a reason), like previewing links in Safari or Mail for example. iOS as we know will soon not exist and the ever so familiar dashboard of Apps might also become irrelevant with Siri, the Google Now like widgets page on iOS, the more functional control center, etc. Though iOS 10 includes a lot of enhancements to the Control Center, like multiple panes of options for Music playback, smart home accessories, etc, it still needs more improvements. For example for now, you can 3D Touch the bottom row of icons on the Control Center like the flash light preference and without leaving the Control Center you can modify the flash light's brightness. While you can do this for all the last row options on the Control Center, you can't do the same with the top row items, like Wifi, for reasons I can't fathom. How easy would it be if this feature was enabled for the Wifi or the Bluetooth preferences? You don't have to go into the ever growing Settings App on iOS to just swap Wifi networks or Bluetooth speakers!
But one thing is certain. Like many of us expected, iOS started off simple, much simpler than Android. But Apple has been steadily improving iOS by making it more feature rich with every iteration. This slow and methodical Apple approach somehow has made iOS almost on par with Android on features. But more importantly this approached has ensured that the way these features have come together on iOS feels much more polished, whereas in Android it feels clunky and hap-hazard (just like how Windows felt on the PC!)