The folks at Blizzard have posted a link to a preview given to the people over at www.gamespy.com. Check out the links below to read the preview, it gives an excellent glimpse of what we can expect from World of Warcraft.
Gamespy Preview: http://www.gamespy.com/previews/january04/wowpc/index.shtml
World of Warcraft Official website: http://www.worldofwarcraft.com/