MacRumors has received several images”seen above and after the break” that show both the interior and rear shell of Apple’s upcoming iPhone 5S. Some things that MacRumors noticed are, The main chip on the logic board is interestingly not labeled with an A-series name such as on the A6 seen in the iPhone 5, a date code visible on the bottom of the main chip reads “1243”, signifying that the chip was manufactured in the 43rd week of 2012, the battery carries a more recent Apple Part Number of 616-0652 compared to the iPhone 5 battery, which has carried several different part numbers including 616-0611 and 616-0613 and the rear shell photo shows a vertical pill-shaped window for the LED flash as opposed to a round window, supporting rumors of a dual LED flash for the iPhone 5S.

Source [MacRumors]