Internally the A7 chip and M7 coprocessor are a powerful combination, which could see them survive through to the next-generation iPhone. We'd be surprised, though, if Apple didn't boost their performance or even engineer quad-core upgrades by the time September comes around in 2014. The camera would probably receive a similar incremental bump to bring it closer to the more standard 12 megapixels that other units will have by then.
Reading the various forums on tech sites gives the distinct impression that customers would like a bigger, but not huge, screen, the waterproof nature of the new Sony products, and longer battery life. Thankfully we don't have too long to wait before we find out which of these features make it into the new Apple flagship product.
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