The software update can be downloaded as an over the air update using a WiFi or 3G connection.
The company says that if you’ve rooted the tablet or unlocked the bootloader you may not receive the update unless you roll back to the stock Motorola software.
Update: It looks like you won’t have to wait much longer to get flash on the XOOM. Adobe says it should be ready to roll on Friday, March 18th.
via Droid Life