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As seen in one photo, the chip carries an Apple model number of APL0698, suggesting that this is indeed intended to be branded as an A7 chip rather than a modification on the A6 chip found in the iPhone 5. 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.
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Another item of interest on the main chip is a K1A0062 identifier. We spoke with Dick James and Jim Morrison of chip teardown firm Chipworks, and they pointed out that in previous chips this number has typically started with an "N" and referred to a Samsung part number on the die. They wonder whether this new "K" identifier could indicate that the chip is being made by TSMC instead of Samsung. A transition from Samsung to TSMC has long been rumored, although the latest rumors indicate that the move will be made with the A8 chip rather than the A7.
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