The undead will be kept at bay until at least the next Call of Duty installment.
We got confirmation late last year that there would be no Zombie mode in the retail release of MW2, but over the weekend, while at the worldwide Call of Duty Finals Tournament, Robert Bolding from Infinity Ward dashed the last bit of hope when he said, "There will be no Nazis or zombies in any piece of Modern Warfare 2 downloadable content."
So, there you have it. At the very least your Nazi-zombie killing habits will have to wait until the next installment of Call of Duty, which Activision confirmed will happen later this year.
MovieMiguel.com