There will be a round of realm maintenance for everyone tomorrow, Tuesday November 10th from 5:00 a.m. PST / 8:00 a.m. EST until 11:00 a.m. PST / 2:00 p.m. EST. This is more or less the "normal" maintenance time we've all come to know and love.
The downtime tomorrow should not be taken as any indication that patch 3.3 is dropping; that event is still a couple weeks away at best. The patch tonight was a "tools patch," that while temporarely screwed things up for the majority of people, wasn't anything that changed things significantly -- at least as far as we all can tell.
If anything else develops of this downtime, we'll be sure to let you know.