I was excited for iOS 9 simply because of the relatively crummy experience iOS 8 had been and the promise of drastic performance improvements due to Metal. Well, I never did notice much in the way of improvement, even up to 9.3.5. I upgraded to the 6s just because the 1 GB of RAM in the 6 was not nearly enough to keep things running smoothly. Fast forward to today, and I think iOS 10 is the first upgrade that actually seems faster than the final version of what it replaced. I've watched speed tests showing 10.0.1 outpacing 9.3.5 across all generations. So…are we finally seeing the promised improvements of Metal, one software version later?