COD5 :world at war is set in WWII,co-op and vehicle in MP

[headshot91]

Supposedly treyarch have had 2 years to finish COD5 unlike cod3 where they had only 9 or so months. Could this show it will be a more quality game?
Also i think the only reason its on wii its to get punters cash id be amazed if the game wasnt different in some way ie obv graphics etc