Did you get notified through zune or the actual phone?
Just got an update as well. What was the number of the firmware it shipped with? because it wasn't an OS update.
Pre-Update:
OS: 7.10.8112.7
Firm. Revision: 2175.1000.8112.12082
HW. Revision: 112.1914.2.0
Radio Soft.: 2.1.75.10
Radio HW.: 8055
BootLoader: 7.17.2.0
Chip SOC: 0.85.2.1
Bad news: the camera button still doesn't always wake the phone like it's supposed to, the volume buttons still don't always work with the screen off, and the headset button still doesn't always work with the screen off. Not sure yet if it fixed my Wifi issue where the Wifi occasionally loses all bandwidth.