the reason there logo is in the opening credits for MW-R is for accreditation of who made the game overall [that and so no lawsuits would take place] I would link you to the article that states this but I can't seem to find it [its old that's why]
and yes Infinity Ward, Sledgehammer Games, Raven are doing Mw3.
btw the names of the two COD
godfathers are Jason West & Vince Zampella these two guys went to EA
and formed there new company called "Respawn Entertainment" just letting you know in case you were interested in this supposed "call of duty killer game" they are making
EDIT: hey lazy jack and shoot2kyll are you guys getting Conduit 2? I heard that game was gonna have DLC
and a lot of other crap [thats good not bad]