I rooted my Xoom several months ago after the first ICS update. I have received another OTA that has downloaded and is asking for install permission. If I allow it to update, will it kill root?
In my case the OTA would fail. But if you install the OTA with CWM there is a good chance it will kill root. Most of the newer rom's include the features that come with the stock rom, and many more. Just pick one you like and go..
In the cases where OTA proceeds, you will lose root (unless you do something to retain it). There are several utilities to help you maintain root through an OTA upgrade or flash. Voodoo OTA rootkeeper is rather popular.