To top it off, the sources of 9to5Mac have also informed them that Apple has been testing 64-bit A7 chips on iPhone 5S prototypes as well. It is not clear if these 64-bit A7 chips will be making it to the final product, but if it does, iPhone 5S owners could be in for a treat. Apparently with these 64-bit A7 chips, the graphical effects on the phone, especially with iOS 7, will appear to be much smoother compared to other iOS devices. The 64-bit processor has also been reported on by analyst Ming-Chi Kuo in the past, who believes that the move to 64-bit could happen in the near future and could either debut with the A7 or the A8, which presumably would arrive on iOS devices in 2014.
In any case take it with a grain of salt for now, but hopefully Apple’s 10th of September event will pan out and we will be able to get our hands on official details soon!