You have to know that when you buy an Apple
device, something newer and shinier is just around the corner, usually a refreshed version of the item you just purchased it. That's especially true if there's not an "S" attached to your iDevice, which is something early iPhone 5
adopters are about to find out.
Citing a Chinese-language Commercial Times
says Apple is about to begin a trial run of a new version of the iPhone 5, presumably the iPhone 5S, as early as December. Initial production will be somewhere between 50,000 and 100,000 units.
As for a release, Apple is reportedly targeting the first quarter of 2013. It's unclear what the iPhone 5S will bring to the table that's not included in the iPhone 5, but part of the reason for its impending release is because of manufacturing problems and low yield rates with the current model.
Launching in the first quarter would mark a departure from Apple's normal release schedule. Initially, Apple was launching new models in June, and more recently has begun releasing iPhone models in September. Still, a Q1 release is plausible, given how outspoken Foxconn has been
with regards to the iPhone 5's design flaws.