Just received the update notice, downloaded and installed to my Xoom2 that I purchased in Singapore back in February.
I did not unroot before applying the OTA and there were no problems. I erased data/factory reset prior to updating as well as formated/erased the internal storage and external SD card. Here is a screenshot taken using power and - volume buttons:-
Screenshot_2012-09-12-16-07-27.jpg
I am performing a system pull so that I have the original files should I need them for future OTA's, then will try to root and restore my apps using Titanium Backup
Edit:
Just rooted using the Motorola Razr ICS Root Exploit (Windows version) by Dan Rosenberg. I now have root!![]()