Maintenance today has been extended until 5:00 p.m. PST. If history tells us anything, it's that it'll be extended a couple more times, so I wouldn't really count on it being up just yet. But Blizzard always has a good reason for doing so, namely, getting the servers working correctly.
So sit back, enter our contests today, and catch up on everything that was and will be.
This post will be updated and bumped up to the front of the site as the situation changes.
Updated 11:40a.m. PST: Maintenance has been extended until 5:00 p.m. PST.