There will be a
WC3, SC, Diablo patch release when SC2 comes out I think, as they have to add support for SC2 to battlnet. They also said it will undergo some major changes for SC2, so be prepaired to wake up to something that feels not quite the same.
As far as I care, the only need for a new patch for
WC3 is eithor better custom map support (more nativs) or better multiplayer stability (stopping random splits and stuff that happen on some maps that are not caused by bad coding). Next to that, I do not care about melee, and if it is just a melee patch, it may cause more damage than it is worth as it would do a lot of minor changes to custom maps which may result in bugs.
All we can do is wait and see.
Anyway who really needs another patch, a game like Empire Earth 1 does but not
WC3, as it can hardly get any more perfect without a total overhaul which they ofcourse will not do.
Also remember that it is their holidays as well now, so do not expect one till you get back to school/work/learning. Who knows, it may be a newyear suppries.