Although lacking important details such as price and release date, Motorola has put up the Motorola Atrix HD Developer Edition on their site which means it should be here soon.
The draw of developer phones is the ability to easily unlock the bootloader although doing so still voids your warranty. Unlocking the bootloader, which is a heavily sought after feature for android enthusiasts, allows you to do things like easily install a custom ROM. The Atrix HD is an older phone but are you still interested? Tell us in the comments!
Source: Android Community