HTC and Microsoft have apparently started to roll out a “Mango Friends and Family Bundle: Pre-Cleanup” update in preparation of the big roll out which is expected to start this week. The specifics of this update are unfortunately not know yet but the “pre-cleanup” words may indicate that this one is probably a backup process or firmware update. If you have any information about it please let me know in the comments section below or on Twitter.
Update: Folks are speculating that this update is meant to allow people currently running the Beta/RTM code to update without having to revert back to NoDo…But this is just speculation at this point because the use of the word cleanup is a tad bit weird IMO.
source: WindowsphoneNZ thanks again CCMD