this is official....In a recent podcast interview published in the recent XBL magazine, Robert Bowling (IW's creative strategist) said there will be patches for both games, but they will be released after MW3 ships in November.
"So much work is going into making sure Modern Warfare 3, out of the gate, doesn't have those problems. That is a major focus. An then then next focus is MW2, followed by COD4. So there's definately stuff in the works."
so lets all forget about a patch for cod 4 it just isnt going to happen.