Yep 7
A number of astute web-heads noticed that Treyarch's senior animator David Kim accidentally confirmed that the Activision Blizzard-owned developer is already in production on Call of Duty 7. Kim updated his LinkedIn profile recently, which read:
I am currently on my second title as a senior animator in the games industry with Activision / Treyarch on Call Of Duty 7.
Of course, once word got out, Kim apparently went back in and edited out the statement. Too late, though, the damage is already done. Early last week we reported that Call of Duty 7 may partially take place in Vietnam, Russia, Africa and Cuba.