User blog:Damac1214/MW3 inspiring Infinity Ward/Treyarch interconnectedness?

As shown by a couple of advertising spots, Call of Duty: Modern Warfare 3 will give players new Prestige Tokens if they have prestiged in any previous Call of Duty game that supports Prestige. Their title cards will also display their current prestige in any previous Call of Duty game with Prestige as well. These include Call of Duty: World at War and Call of Duty: Black Ops. MW3 is developed by IW, while WaW and BO were developed by Treyarch. Is this the first sign of the two developers starting to come together? And what other in-game connections lie in the future?