I updated mine a week ago. It took about 40-45 minutes on my drive home. The operation using the seek button on the steering wheel to scroll through the radio presets is now opposite. It used to be down to go from preset 1 to 2, but now it is up.
Also, right after I started my Edge yesterday, it started playing the radio, which is where it was when I had previously turned it off, and switched to the iPod a couple of seconds later without me doing anything. It had done this a few times before the upgrade, so it doesn't look like they fixed that yet.