User blog comment:Capt Shruikan/NEW Rank IV Hull Upgrade: StormChaser!/@comment-4482110-20111125220456/@comment-1140008-20111126205639

They never have a specific date. They keep it lenient so they are able to make it the best, bug-free update possible. Also there are tons of bugs to be fixed still. Not to mention that they have to add back the Rank V Hulls, and the Grog Ship Material.