According to TechCrunch, that represents 5 percent of Apple's entire non-retail workforce. Crazy. But also brilliant. Apple was one of the first to start moving to flash memory for non-phone devices, and that helped them modernise form factor as we know it right now. But also, the every-last-drop graphical performance of the A5, and future chips, presumably, allows Apple to make products that perform well with lesser specs than competitors, such as the rumored 512 RAM in the iPhone 4S.
So yeah, we knew that moving us past the PC era is a huge priority for Apple, but dedicating this many employees to pushing its mobile, tablet, and whatever untold new frontiers might be out there forward shows just how serious they are. [TechCrunch]