This isn't the first time the Droid X has had its source code revealed to the world, but it's a first for the frozen yogurt kind (MotoBlur-ridden as it may be). That's right - despite some acknowledged issues with the update, Motorola has decided the pressure of the GPLv2 license was too much to bear and handed over the source code for the Droid X's FroYo update. Hackers, developers, and anyone else interested, tinker away!
Note: If you have any confusion regarding Android's dual Apache/GPL licensing, head over to this excellent ArsTechnica article that explains it in great detail.
Source: Motorola via Droid Life