personally im 99% sure they won't release 3.3 this year. just for the simple reason that they don't want their employees stressing out around the holiday hotfixing stuff and restarting crashed instance servers.
this game has been out for over 4 years in europe and there has never been a patch in december and the support around the holidays is always as low as possible.
6th january seems like a nice date for the first wing to be released.
23rd dec and 30th dec are just to close to holidays and i just don't expect blizzard to have it ready before that.
but hey don't wan't to ruin all your hopes by fiding more facts