Developer and website logs have begun to record visits from a previously known iPhone model, and even indicating that the devices are using iOS 7, the next major revision that is expected to offer a design overhaul as well. While such OS and device data may possibly be faked, many of the reports are from the unique IP block assigned to Apple, lending credibility. The activity indicates that testing is well underway, making at least a preview of iOS 7 much more likely at the Worldwide Developer's Conference, likely to happen in June.
