The New York Times' excellent Bits Blog wrote this morning about how Apple's management changes could lead to user interface changes. In particular, this concerns skeuomorphic elements and textures: Forstall (and Jobs before him) were apparently enamored with recreating real objects in the iOS interface. You can see this in apps like Game Center (hideous felt and a casino table motif), Newsstand and iBooks (they're not real texts unless they're on a virtual shelf), and the linen texture that pervades iOS and now OS X.
Ubergizmo , Why Apple May Be Ditching Fake Leather, Felt, And Bookshelves, Why Apple May Be Ditching Fake Leather, Felt, And Bookshelves