After a little bit of a delay, Motorola and Google are now pushing out the Android 4.1.1 Jelly Bean update to Motorola Xoom WiFi owners who signed up for the testing process. Overall, it's Jelly Bean. Not much else can be said about it really. Everything you would expect to be in place, is indeed there with one exception. That one exception appears to be Chrome. You still need to download it from the Google Play Store in order to have it loaded.
All that said, there still isn't any timeline for a full blown release but it shouldn't be all that long of a wait. The OS update does feel good and added some pep to the now aging Motorola Xoom. If you're looking to load this one up, there is a few options to choose from whether you're rooted or not. One is to use a USB host cable, the other is to flash a recovery that will support the update. For me, this method in the forums worked but if you're looking to try out the USB host method, you'll find the link below. Worst case, you may have to wait for it to go official.
Guide: XDA, Thanks, Chad!