Circumstantial Evidence Points to New iPhone Beginning of October

AT&T will be reworking the insurance for mobile, specially the iPhone start on October 4th.  9to5Mac seems to suggest this means that new iPhone should debut around that time.  

It's very strong evidence.  This will allow Apple to introduce the next iPhone in September along with the annual refresh of the iPod line, and possibly the next Apple TV and related media services.  

Source:  9to5Mac.