User blog comment:AdvancedRookie/Activision hints at more frequent DLC and content variety/@comment-2072346-20120108013130/@comment-64.223.84.150-20120108224737

What you said about Op. Kingfish being in Mw3 campaign, you're right. They should add it as the last mission for Act 2 (Or the first mission of Act 3). So the cutscene could be Price and Sandman chatting about their old days (3 yrs. ago) and Price tells Sandman that Soap's dead.