Bootloader still locked. Battery bug still exists. If after flashing, it asks you to proceed to another (smaller) update (it shouldn't), don't do it. Consider yourself warned.
Flash over stock 2.3.4. Won't work with custom roms! Do not try!
Nothing really dramatic has changed, really, I'm just posting this for devs and whatnot to get their roms updated and such, but everyone else is welcome to install.
After install, you will need to root with zergRush. Now, I'm not sure if you can flash this in ClockworkMod Recovery, I haven't tried. Your best bet would be to throw this on the sd card, rename it UPDATE.zip and then boot into stock recovery and flash.
Changelog (not my change log)
1.3.412: Based on 2.3.5 framework Lockscreen dramatically optimized Couple kernel changes (no idea what) System is overall SLIGHTLY snappier compared to 2.3.4
--Miss the pulldown toggles? Mastafunk was very generous to post flashable pulldown toggle mods for 2.3.5. CLICK HERE.
Join us in the Droid X2 IRC channel! http://webchat.freenode.net/
Channel is #dx2