Apple has released an iOS update for the iPhone 5 and iPad mini, bringing the iOS version for those devices up to 6.0.2. The release notes for the iPhone note only that an unnamed Wi-Fi bug has been fixed.
iOS 6.0.2 Software Update
This update contains improvements and bug fixes, including:
• Fixes a bug that could impact Wi-Fi
For information on the security content of this update, please visit this website:
iOS 6.0.1 was released on November 1, with the fourth beta of iOS 6.1 released just yesterday.
Update: Many users are reporting difficulties downloading iOS 6.0.2, with attempts at over-the-air updates simply yielding errors. Users updating through iTunes appear to be having more success, although even then it may take several attempts.