If there is no 1.7.2 dev build by Dec. 10th, or if the dev build has critical problems with it, I will push back the release of the map. I'd prefer a clean launch to one with no functional plugins. If that happens, there are some unannounced things I will release on the 17th instead.
Looks like Bukkit just released a development build, so the release date is unchanged for now.
You need to use Minecraft 1.6.4 to connect to wow.cursecraft.com. You can do this by clicking "Edit Profile" in the Minecraft launcher and selecting "Use version: release 1.6.4".