Apple already appears to be testing its next iPhone and mobile operating system.
Multiple developers of Apple apps say they have begun to see references to "iPhone6,1" hardware running iOS 7 in their app data usage logs, according to the Next Web.
App data usage logs help developers identify the kinds of devices and operating systems that are using their apps. The current iPhone -- the iPhone 5 -- is identified with either an "iPhone5,1" or "iPhone5,2" designation.
Adding to the intrigue of the new device and operating system showing up on usage logs are their IP addresses, which appear to be originating out of Cupertino, Calif., which happens to be Apple's hometown.