In typically blisteringly-quick fashion, the hackers at XDA have managed to root a Wi-Fi XOOM in no time at all - good news, considering that the root method for the regular XOOM was bricking the Wi-Fi models. It's worth noting that unlocking the XOOM's bootloader (which is required for root) wipes the device.

The current method does require some ADB commands, but certainly nothing tricky. Still, for those who are hesitant, it's likely that an automated method won't be far behind. The instructions, as posted by Xaositek:

This is it guys... HUGE props to MADindustries and modplan!

Download the Motorola WiFi Xoom Root Zip file and unzip it. (http://dl.dropbox.com/u/2180926/xoomwifiroot.zip)
Place the files in the SDK Tools folder.

If rebooting works...
adb reboot bootloader
fastboot oem unlock
adb reboot bootloader

If stuck at "Dual Core Technology"
Hold VolUp and power to restart Xoom
Hold VolDown will booting unit for fastboot mode

fastboot flash boot boot.img (Tiamat 1.1.6 boot.img - http://forum.xda-developers.com/showthread.php?t=978013)
fastboot reboot
adb remount
adb push bcm4329.ko /system/lib/modules/bcm4329.ko
adb push cifs.ko /system/lib/modules/cifs.ko
adb push tun.ko /system/lib/modules/tun.ko
adb push scsi_wait_scan.ko /system/lib/modules/scsi_wait_scan.ko
adb push su /system/bin
adb shell ln -s /system/bin/su /system/xbin/su
adb shell chmod 4755 /system/bin/su
adb push Superuser.apk /system/app
adb reboot
adb shell

WE HAZ ROOT!!

^{The car is a metaphor for your data.}

Like I said, it's actually quite simple, especially compared to some of the lengthier root methods we've seen lately. If you take the dive, let us know how it goes - but if you encounter any issues, you're best off posting in the source thread, as they can provide better support than we.

[Source: XDA-Developers]