Developers have begun seeing references to both the iPhone 6 (or whatever it will be called) and iOS 7 in app usage logs. It's something that is typically noted, but the detection of the new platform and device would seem to be coming rather early.
According to a report issued just as the 2013 dawned, on Jan. 1, at least one developer has seen hardware logs indicating a new "iPhone6,1" device, running iOS 7, both which are expected to be released by Apple in the coming year. These identifiers are typical of Apple's devices.
The iPhone 5, for example, is either "iPhone5,1" or "iPhone5,2." This is typical of iDevices, ranging from the iPod touch to the iPad to the iPhone; they will bear hardware IDs of (assuming iPhone) iPhoneX,Y depending on the device version.
The logs show that the app requests are coming from an iP address on Apple's Cupertino campus, which makes sense. These would be early devices being tested by Apple's developer teams. The app logs are coming from prototypes being tested for compatibility against well-known applications already on the App Store.
In the most recent past, Apple has released details on its new version of iOS during its Worldwide Developer Conference (WWDC), which is typically held in San Francisco sometime in June. Its iPhone releases have shifted from around the same timeframe -- summer -- to later in the year, after the iPhone 4S was released in October of 2011.
The hardware and software IDs don't give any specifics in terms of hardware specifications, such as processor, RAM, internal storage -- all things that end users would love to know ahead of an iPhone 6 release. Still, it's interested to see that Apple is already testing the new version, just as the new year dawns.