Call of Duty 2014 - Developed by Sledgehammer Games (Rumor)Sledgehammer Games, the co-developers of 2011's Modern Warfare 3, are possibly the main development studio for Call of Duty's upcoming installment, (yet to be titled or formerly announced). Their are multiple hints at this:
James C. Burns (voice actor for Frank Woods in the Black Ops series - @Sgt_Frank_Woods) on twitter tweeted out saying, "I keep seeing a lot of people guessing out there...trying to predict the next step for COD." A fan then replied "No zombies or frank woods for 2 years?!" then James Burns re-tweeted this.
Also, Sledgehammer Games recently had they're Twitter page officially verified.
So; what do you think?