Looks like Motorola's next-gen Atrix currently has an update rolling out to it. Folks in the Android Central forums happened to notice the software update notification and sure enough - v55.13.25 is now available for download. Motorola's got these official changes for the Atrix 2:
Camera - Enhancements to deliver better overall picture taking experience so you never miss a moment
Google Music -Addition of Google Music application so you have greater access to the world of music. Shop millions of songs and hundreds of free tracks. Store your purchases on Google Music for free, and listen instantly on your mobile device.
My Gallery, My Music, My Files - Re-naming of Motorola Gallery, Music, and Files applications for easy access in the Applications Tray
Device Security - Enhancements to deliver greater device security, including addition of Android security patches from Google and Cisco Any Connect VPN enablers.
Emergency Alerts - Enhancement to allow you to receive emergency alerts from authorities such as Hurricane warning notifications.
Amazon Kindle - Enhancement to include link to app for quick and easy method to access your library of Amazon digital books as well as access to the entire Amazon library.
AT&T Messages - Enhancement to include link to app for quick and easy method to give you access to all of your texts, calls and messages which have been stored in the cloud.
Keyboard - Improvements to keyboard functionality for better email experience
Mobile Hotspot - Improved stability for better overall performance
Webtop - Enhancements to improve stability and better overall performance
That's a whole lot of improvements to be pushing in one update. If you've not recieved the notification, go ahead and check for system updates, you should find it waiting. Once you're done, drop by the Android Central forums and let us know how things are working out.