According to the Call of Duty community page Tek9 Activision has given them some inside information about the upcoming Call of Duty 7 game. Some things such as the game being developed by Treyarch are already known but Tek9 has found out several new features of the game.
For starters the game will infact have dedicated servers which is great news after the great dissapointment Modern Warfare 2 turned out to be due to not having any dedicated servers and thus destroying any way of decent competitive play. Other interesting news is the addition of a Zombie Mod which is very popular in COD5.
The game is scheduled to be released in November 2010 and the game is suposedly taking place during the Vietnam / Cold War.
Source :
http://www.team-dignitas.org/index.php?id=9880