Jim Dalrymple on what he expects from iOS 7:
Take a look back at the first version of OS X with the Aqua interface and compare that with what we have today. You can see a lot of the same types of elements in the OS design, but it’s more modern — it’s smoother and less dramatic in its effects.This is exactly how I've been talking about the changes we should see in iOS 7. There's an outside chance of ultra-flat, but it's slim.