By the power of truth, I, while living, have conquered the universe.
Posted by: ASJ07
We won't know for sure until September 22, 2009. However, there is firefight, three new multiplayer maps Heretric, Long Shore, Citadel, you will be able to get recon armor after completing all the Vidmaster achievements. There may be new skull but probably not.
The information in my post above you is all confirmed information.