Metal Gear Solid: Ground Zeroes Is Not 'Project Ogre'

In a undone tweet, Hideo Kojima, head of Kojima Productions, mentioned that "Project Ogre is the plan that Ogre appears," observant "Ogre does not show up in 'MGS Ground Zeroes' trailer." While the specifics of the refusal are still in subject - is "Ogre" a disposition in add-on to representing "open ground?" - the on the whole summary is clear: Project Ogre and Ground Zeroes are different.

Of course, that would meant KojiPro is working on two open world games at the same time, that seems insane.