I know we just released an article showing Droid 3 owners how to root their device through adb but it seems that a OneClick method was released a few hours later. Below are the instructions and downloads for the OneClick Droid 3 Root Method.
Put your phone in USB Debugging Mode “Settings > Applications > Development > USB debugging”
Plug phone into computer and select “Charge Only” mode
Navigate to “Droid 3 easy root” folder and run “Click to root your Droid 3.bat”
Now just follow the instructions in the command window and unlock the phone after each reboot.
All credit goes to Framework43 and psouza4 for this method. This method is also thought to work on most other Motorola Droid Models as well.
The Droid 3 has been out for a little while now and has finally been rooted. The Droid 3 is supposedly one of the most powerful phones currently available with a 1GHz dual-core OMAP Processor running Android Gingerbread 2.3.4. All props go to drjbliss over at XDA for the root method.