According to Tiltedscreen, the following can be expected in the next Call of Duty title:
– Ability to operate vehicles.
-The following weapons will not return: Scorpion, P90, M21, R700, G3, G360 and others not known.
– New weapons: SR25M sniper rifle (USA), Diemeco C8 assault rifle (Canadian Forces), L85A2 assault rifle (UK)
– Total multiplayer weapons +- 35.
– Favorite modern warfare maps will return.
– Helicopters, Air Strikes, UAV will return.
– Multiplayer snipers will get grass camouflage as seen in CoD4’s campaign.
– All CoD4 perks will return, except Eavesdrop. Many current perks will change.
– All CoD4 gametypes will return, and will include Hard Core modes.
– New gametypes: “Secure” (Essentially capture the flag, but flag is replaced with enemy intel). Unnamed new game type which is similar to search and destroy, but instead of planting a bomb, players must kill a specific enemy.
– Specific solider customization.
– Snipers with silencers not playable in multiplayer.
– Something along the lines of CoD5 Zombie level to be included.
– Ability to save killcams.
– New Co-op mode.
– Story takes place in Middle East
– Will be released around November
– Certain weapons will only be usable in campaigns
Sounds to us like an airbrushed CoD 4, which is by no means necessarily a bad thing.
UPDATE
Discuss CoD 6 rumors on the forums