When will call of duty modern warfare 3 coming out?

Modern warfare 3 is Infinity ward and they release November 2011 and also only release new games every 2 years. Treyarch did Black Ops 2 years after world at war.

I think call of duty black ops is modern warfare 3. Im not sure but they would of made modern warfare 3 before black ops. They might make black ops 2.