FYI - I just installed this new update, but there was some weirdness associated with the update process in my case. When I booted my Mac, I saw that the icons had changed in the menu bar but not in the dock. So I launched the Antivirus, and it was plain that the interface had changed, but the sizing of the boxes on the left-hand side of the window obscured parts of the icons which looked very strange. So, I selected Live Update, and restarted, and then it completed the update successfully.
I am running Mountain Lion on a Macbook Pro.
Thanks for the update!!
Jen