The Breaking News box has recently cropped up in-game, announcing tomorrow's maintenance for North American realms. As you can see in the image to the right, servers will be down from 3:00 AM PDT until roughly 11:00 AM PDT, assuming all goes well. If you're not sure what time this is in your timezone, use this timezone conversion tool.
You know the drill, guys. WoW.com will, as always, be here all throughout the maintenance to cure your boredom. For you European readers, remember that some of you will be hit with an extended maintenance later on, which we've posted about already.