Motorola Xoom Android 4.0.3
Yes you will lose root. But you can re-root via
I have not
Thanks to www.androidpolice.com
This is signed with testkeys, but should be flashed over a stock HTK75D build
I'm not going to reinvent the wheel here. There are plenty of others who have the time to work on these builds. Here is a good place to start if you want a pre-rooted CWM flashable zip.
I have not tested this yet myself, just too busy.