Servers seem to be having all sorts of problems actually staying up tonight. A fair portion of the population is experiencing chronic server crashes, including my home server. A few of my guildmates canceled their 10-man raids as a result of players' inability to stay online. Even when the server isn't down, it's a real pain staying connected.
We don't really have any information as far as clear upcoming fixes or how long the issue will last, but we here at WoW Insider most definitely know how you feel. Consider this a show of solidarity. It's lame, and hopefully it will go away soon. If you're just sitting down now to dig into your playtime for the night, expect some interruptions.
What we do have is a little bit of information about possible upcoming realm transfers that will be opening up in the near future. Free transfers, of course. You can find Zarhym's list behind the cut below.