It appears that the mystery chip from last week's (purported) iPhone 5S leak is a mystery no more. Thanks to MacRumors' new — and far better — photos of the new iPhone's backend, the chips is now clearly identifiable as a an A7 chip.
The real giveaway that this is not, in fact, just a modified version of the A6 chip that the current iPhone 5 packs is the new model number, APL0698. According to MacRumors:
The original A6 chip carried a model number of APL0598, with the A6X found in the fourth-generation iPad carrying an APL5598 model number, demonstrating how Apple varies the first digit for members of a given A-series family and increments the second digit when transitioning to a new family.
However, the chip's other markings tell us that although this is an upgrade, it's not a total overhaul of the A6 — it appear we're still getting the same 1GB of Elpida DRAM on the A7.
Of course and as with any leaked images, there's always the chance that these don't actually belong to the phone we'll be seeing come (probably around) September-ish. [MacRumors]