When iOS 6 was released users were faced with a few bugs here and there. iOS 6.0.1 was released to fix most of these bugs. It did but a few bugs remained. One of the bugs users faces was problems with Wi-Fi.
I'm not sure exactly what problem this fixes, but my friend today was able to catch a Wifi hotspot using his iPhone 4 running iOS 5 while my iPhone 5 couldn't. It also takes quite a long time to connect to Wifi on iOS 6
Hopefully this update fixes both the Wifi problems as the update was released to specifically fix the Wifi bug. The update says:
"Fixes a bug that could impact Wi-Fi."
Did the update fix the bug for you?