Very smart of apple...improve memory subsystem/cache, use wider execution and keep clocks low, thus leaving precious tdp for advanced graphics acceleration.
Ailuros has a point, if apple moved to 28nm, rogue, lpddr3....that is going to be one advanced power efficient chip.
Such a pity I don't/won't purchase apple products...if only Nokia designed those apple chips and stuck them in a lumia!!
Rogue GPU IP won't be exclusive to Apple's products. As for NOKIA I'd be waiting until ST Micro/ST Ericsson executes with its Novathor A9600. I hope we'll see it in products at least in H2 13'.