“We apologize for the feedback we provided regarding our bootloader policy. The response does not reflect the views of Motorola.
We are working closely with our partners to offer a bootloader solution that will enable developers to use our devices as a development platform while still protecting our users’ interests. More detailed information will follow as we get closer to availability.”
What's the result?
Atrix was left with encrypted bootloader, preventing using custom kernels and switching Android version, while Xoom was equipped with fastboot oem unlock (which you may know from Nexus series) making hacking peace of cake, and leaving Atrix owners with a sad face.
In my opinion every manufacturer should leave user choice to void his warranty and do with his device what he wishes to. Atrix users are working on hacking the bootloader, but who knows how long can it take...