The update — as can be discerned from its tiny version number increase — primarily consists of bugfixes and doesn’t really bring anything new to the platform.
As can be seen from the full changelog depicted in the screenshot below, one of the updates includes a fix that prevented the iPhone 5 from installing software updates OTA (over-the-air). Another high profile bug regarding the keyboard and a passcode lock issue has also been fixed. Wi-Fi performance on the latest iPhone and iPod Touch should also be improved with this update for those connecting to WPA2 Wi-Fi networks. A number of other fixes are detailed below:
Have you received the update yet?