It's possible, but probable? i dont think so. People make these claims all the time, but never have proof to back up what they say. We just have to wait until we get a leak from a trustworthy source. Until then, everything is false until proven true.
my uncle works at treyarch, its going to be in Area 51, theres is going to be an ammo shop were u can buy ammo and a perk shop thts like a bar. Thier using the time machine to go back were the earth wasnt destroyed.