So, a couple of impressions:
1. The browser performance is much improved, significantly faster. It's been very stable so far too. Better yet, the keyboard response is quicker on websites. It used to stutter for me at times, such as when typing in this forum.
2. The Widgets scroll faster and smoother.
3. I could not find a way to format the SD card I put in the Xoom, but it recognizes it's there.
4. Zoom mode is similar to compatibility mode for iPhone apps on an iPad. It's available for an app if the "zoom button" shows up next to the clock.
5. The Google+ app is running like a pig after this update.
6. There's an option in settings to set the time long pressing a shortcut causes it to be picked up and moved.
7. It's booting up slightly faster.