if this is true I will never buy another call of duty title. Not treyach nor sledgehammer or infinity ward versions. I will boycott the whole franchise for good.
Don't stress over it too much... I am pretty sure that it WILL be Treyarch who releases the 2014 CoD title anyway.
Sledgehammer will not make a CoD title on their own, and if they do, it won't be the 2014 CoD. They have only just started a recruitment process for new developers to come in. They would not be hiring just now for a game that is due in 10 month time.
People on YT who post such fabricated nonsense should know better, but this is what happens when people rely on 17 year old kids to give them the lowdown of what is happening.
That's right, guys. Let's not fret just yet. I believe that treyarch will make the next one because of the success of BO2. PTG seems to "know" that treyarch is making the next one. God I need some zombies soon. I have flat wore out BO2.... Haha