I'm just going to throw my thoughts into this. I think iOS is still a skeuomorphic system, it is just choosing very different designs.
Personally I am a fan of the skeuomorphic designs in iOS, that's just my preference. I believe that has helped iOS, allowing children and the elderly to understand and use it. However it did bother me that Apple is supposed to sell premium products, however the physical items they emulated were all very cheap looking.
The main app I am going to point at is Notes. Before, notes was mimicking a yellow lined pad. Now, notes has a paper texture, almost like watercolour paper. It has not abandoned the skeuomorphic approach, it is still mimicking a paper notepad. The difference is, instead of mimicking a cheap yellow pad, it is mimicking a more expensive notepad.
That's just one app, but calendar still looks like a real calendar to me, a simple uncluttered one sure, but you can find real ones like that. Control and notifications, before they looked like linen but now they look like frosted glass, another real material.
The os still works on the underlying metaphor of manipulating 'real' objects, the only difference is where Forstall looked in the kiddies section of a stationary shop, Ives walks past that and into the more grown up area, then chooses the least cluttered and minimal one.