UPDATE: Infinity Ward have since denied that voice acting for the game is taking place. "Interesting news today, but it's not true," the developers tweeted. "We've not talked with any voice actors, so all news is speculation."
“On Monday I am off to meet Infinity Ward about the next game, Modern Warfare 4,” Murray told This Is Xbox in an unlikely encounter on a plane. “I’m doing work on the sequel to Modern Warfare 3. It carries straight on and I only ever appear in the Modern Warfare games.”
So here are the salient points again, for emphasis: Modern Warfare 4 is being developed by Infinity Ward, and the plot picks up directly after the conclusion of MW3.
Modern Warfare 4 is being developed by Infinity Ward.
Modern Warfare 4 is being developed. Discuss.