Just as Tigole said, the plague has indeed gone away. The crates are still there, but you can't contract the plague anymore. The zombies haven't been wiped out yet, but they'll eventually just wear themselves down, they can't spread the infection. No ceremony, no big events or explosions, the plague just stopped being effective. A little disappointing, really.
However, there is a rumor, a rumor, that at 4 PM PST there will be stuff goin' down in Azeroth. Supposedly it will be 'epic.' What is it? I don't know. It's entirely a rumor, but man do we love us some rumors. You do too, don't you? I thought so! Well, if anything actually does happen, we'll be right here to let you know!
Edit: Well, a whole lot of nothin' happened. Rumors are a fickle mistress! A few readers have reported that the necopoli outside of major cities are hovering lower in the sky, but it's difficult to tell. That's all we've seen or heard so far.