While it's possible, it's highly doubtful Apple will radically shift away from their current look. Microsoft are currently associated with the whole flat-design

While it's possible, it's highly doubtful Apple will radically shift away from their current look. Microsoft are currently associated with the whole flat-design UI trend and I can only speculate that changing to a completely flat look would only fuel the speculation that Apple are out of ideas and lack vision to keep innovating thus driving their share price down further and undoing all of their hard work over the years. You're only as good as your last hit as they say in the music industry. I am envisioning if Apple does change to a flat UI look, it'll have their own little twist on it. I think it's a given they'll drop the skeuomorphism from iOS, because lets face it, skeuomorphic elements like leather books and note paper backgrounds look dated when used anywhere (not just mobile applications). I would expect things will get flatter, but evident by their latest Mac OS and iTunes redesigns which I think give us a sneak peek of the direction: not completely flat, still dabs of light & aluminium as well as rounded corners on things. Whatever the end result is, I think we can all agree Apple needs to evolve. The iOS interface has remained basically untouched since 2007, it's time for a change because the aging operating system is starting to show its age.