Apple's iPhone 5S announcement today was a very strange one for Apple, because Apple more often than not focuses on the software side of things rather than digging into specs and hardware. But, today's announcement had the Apple team basically skimming over all of the iOS 7 changes, and focusing on the big hardware changes of the iPhone 5S like the fingerprint scanner, camera, and new 64-bit A7 processor...
Source: http://www.phonearena.com/news/The-iPhone-5S-64-bit-processor-is-for-marketing-not-performance-benefits_id47338
Source: http://www.phonearena.com/news/The-iPhone-5S-64-bit-processor-is-for-marketing-not-performance-benefits_id47338