One of the nicer iPhone photos (renderings?) I've ever seen.
Yay totally custom fonts for high budget projects. Also iTunes always has the nicest promo graphics.
Exposing the spine as the rollover is super nice.
Nice logo. Nice article intro format.
Super bold sections.
Very very button-y. Although it kinda makes you wonder what would happen if you press "Apps" - is that a button too?
Pretty obvious how it works with that clean example. I quite like the tags and arrows. Slight adjustments to the "under" shape makes the look slightly mis-painted. That with the variable width stroke makes them look somehow friendlier.