It is a good day for AT&T Surround users. Reader IDrankBlueKookAid tipped me off so I plugged into Zune and there was the February update. Got the notification on my phone at the same time. February update took about 7 minutes. Without unplugging I went to check for another update and noticed the message was already on my phone screen. The March/NoDo update took a total of 57 minutes to complete, including 24 minutes for Step 6, the backup process. FYI, I have about 6.5GB of data on my phone, including about 150 apps/games, 601 songs, 680 photos and a bunch of videos.
Have not even taken a cruise around the phone but the OS, Firmware, Radio and Bootloader have all been updated: