Google just rolled out Android 4.0.3 update to Nexus S and released Ice Cream Sandwich ASOP code, a member of xda forum razorbladex401 successfully ported the ROM to Motorola Xoom WiFi Tablet. The custom OS image is still under development and everything doesn’t work such as camera and some other features, there is also a green overlay appear on the screen sometimes.
If you are an advanced user and know how to flash custom build then you may try out Android 4.0.3 Ice Cream Sandwich right now on your Motorola Xoom WiFi Tablet. Just head over to original forum thread and follow the installation guide. Enjoy!