Apple started pushing out iOS 6.1.1 for the iPhone 4S this afternoon. You can download it here.
Apparently the over-the-air update fixes some issues with 3G coverage in Europe. We haven't seen it pop up on the iPhone 5 or any other devices yet. However, since it seems to address a wireless connectivity issue, it's possible it's only for the 4S. We'll update when we know more. [TheNextWeb]