Nope, unstableapps/easyroot hasn't figured it out yet.

Edit, I stand corrected on the "Nope"...see below.

 

actually you can do it using rage against the cage in terminal emulator. I know there was a thread on df explaining how. If I can find it I will post back with a link.

edit: heres the thread. It says droid 2 but should work the the DX just the same.
http://www.droidforums.net/forum/droid-2-hacks/80080-much-simpler-guide-rooting-no-pc-required.html

 

Wow, never knew you didn't need a comp.. lol

badass.