Droid X users, today you’re in for a treat. Information on an update that surfaced online yesterday has been evolving overnight, and all signs point towards OTA 4.5.588 being the real thing: the official update to Gingerbread.
As of right now, there are very few reports of the OTA actually coming over the air, but a flashable file is ready to download. According to a thread on the Droid X Forums, root has already been achieved — just not released — and some users are saying you can indeed SBF back to stock build 340 should you miss your more customized ROM from before the jump.
For more information on the update to Gingerbread, and to get ahold of the update.zip, visit the “Anyone get OTA 4.5.588??” thread from Droid X Forums now.