Like the subject says, how do you implement the frosted glass effect (blurry the background) in iOS 7? I find it odd that it's being used all over the place in the stock apps, but there doesn't seem to be any public API available for non-Apple apps to take advantage of it. Or have I missed it?
At the moment, I'm cheating by abusing an UIToolBar as an overlay. It works, but dear lord that can't be the right way.