Yep, another COD game is coming from Treyarch
[ame="http://www.youtube.com/watch?v=l1pUiQxVjvU"]YouTube - Call of Duty Black Ops Teaser Trailer [HD][/ame]
Looks like it's going to be based in Vietnam this time. I wasn't very impressed with how Treyarch did COD: World at War, so I'm not expecting this to be as great as the other Call of Duty games made by Infinity Ward. However, it looks interesting enough.