Apple May Be Testing iPhone OS 3.1.3 and OS 4.0

Server logs indicate that Apple may be testing two new versions of the iPhone OS.

The BoyGeniusReport found evidence of two new user agents in their log files. The first, iPhone OS 3.1.3 would be a minor bug fix. The second, iPhone OS 4.0 would be a significant upgrade to the operating system.

Its important to note that user agents can be faked; however, its fairly obvious that Apple would already be working on the next update.