Identifiers for iOS 7 and a next-generation iPhone have started appearing in app usage logs, several developers say. One developer in particular has recorded an "iPhone6,1" device running iOS 7; for reference, the iPhone 5 is listed either as "iPhone5,1" or "iPhone5,2," depending on the cellular bands it uses. The new identifiers are linked to an IP address at Apple's Cupertino headquarters, which suggests that Apple is testing out early builds of iOS 7 with pre-existing apps.
