Apparently someone saw a few new formations that were posted on the GW website along with some new Astra Militarum ones. While I did not see them, I am trying to find out if any else did, and if there were some screenshots of it. Here is what I was told....
Please remember that these are rumors.
via Necronspurs2012 on Faeit 212
On tuesday night a few night lord formations were posted on the gw website along with the new guard ones but immediately were taken down.