The update brings new support for microSD cards so that you can use a file manager to view all of the pictures, music, video and other important things stored on your microSD card. Also, you can use a connection to your PC or Mac to write content to your SD card. After installing the maintenance update, you will be able to improve the quality of viewing streaming media by adjusting the bit rate based on the bandwidth of the client. Finally, a new policy for ExchangeActiveSync will allow you to recover a lost, forgotten or missing password.
You can check out the entire changelog at the sourcelink. While it is an OTA update, you can look for it by going to Settings, About Tablet, to System Updates. And while this maintenance update is offered only to the Verizon version of the tablet, there is a chance that it will eventually be offered to those with the Wi-Fi version of the Motorola XOOM.
source: Verizon via AndroidGuys