WWDC 2013 app: iOS 7 reveal?

If you compare this year’s app to last year’s, it’s pretty clear where this is going: flatter all around.

I almost like it, but I’ll have to see as a whole to make up my mind. I’m a tad concerned by the tab bar’s height: while it does have the same height as last year’s, it feels smaller and less… I don’t know, less real.