After installing the update, the rear camera on the the three phones should benefit from snappier focusing, more consistent exposure, improved white balance and improved HDR. In addition, you will receive the 50GB of free storage with Google Drive that was part of a promotion. Added to the 15GB that everyone gets, you will have 65GB of cloud based storage to work with.
The post also mentions that Motorola wants to get right back to work on their next update, which leads us to assume that Android 4.3 Jelly Bean or Android 4.4 KitKat maybe right around the corner for these handsets.
source: +Punit Soni