While the Lightning dock connector is believed to be capable of USB 3.0 support, Apple has not yet made iOS devices fully compatible with USB 3.0. As a result, file transfer occurs at slower speeds than it should in this day in age. Considering that the MacBook Pro with Retina display has USB 3.0 ports, it would make sense for Apple to bring USB 3.0 support to the iPhone, iPad and iPod touch.
And, as speculated by Buster Heine for Cult of Mac, that support could be coming soon. Apple has recently posted a new job listing that calls for a “Senior Software Quality Engineer (USB) to join the USB Connectivity Compliance QA Team,” according to Heine. While there is no mention of iOS devices in particular, it would make sense that Apple could use this new hire to help bring USB 3.0 standards to iOS devices.