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.
source: http://www.macrumors.com/2012/12/18/apple-releases-ios-6-0-2-software-update-for-iphone-5-and-ipad-mini-fixes-wi-fi-bug/

source: http://www.macrumors.com/2012/12/18/apple-releases-ios-6-0-2-software-update-for-iphone-5-and-ipad-mini-fixes-wi-fi-bug/