While everything has been hit by the crazed Wulfen, they are still not coming to pre-order until next week. Until then we have the Slaves to Darkness, and more images are out now, giving us a better look at what to expect coming out of this weekend's White Dwarf.
The Slaves to Darkness are dedicated to Chaos, overall not to a specific Chaos God, and with all the chariots and mounted warriors in the pics, are an impressive sight.
Here is a link to some new images, and of some that we have already seen.
http://imgur.com/a/bjF7R