Call Of Duty 7 : Vietnam. Announced in November 2010

Activision has pencilled in a November release for the seventh Call Of Duty – which will be set in the late 1960s, during the Vietnam War. Treyarch-developed title is scheduled to arrive a full 12 months after last year’s Modern Warfare 2.
The game would be set during the Vietnam conflict – and takes particular influence from classic movies Apocalypse Now and Platoon.
“It’s going to be November again – just as with World At War and Modern Warfare 2,”
“Activision believes that it can own Christmas 2010, just as it has in the last two years.
“Development is on course – and Treyarch have been told the game must be ready to hit shelves before the gifting season.”