Sisir Koppaka:
I don’t believe Apple added 64-bit support to iOS 7 and all their apps just to prepare for an eventual transition to 4GB+ memory capacities in future iPhones. I think this was to do with something more impending. Do we know any product category that Apple would be interested in, that would require the use of both iOS and an A-series chip that is 64-bit capable in order to address 4GB+ memory?
Apple TV (the one that is yet to come, not the one that exists).