When Hideo Kojima unveiled the trailer for Metal Gear Solid 5: The Phantom Pain, he did so while wearing a head bandage like the one worn in the game by the character known as Ishmael. (He took the bandage off later, so we know it was him.) Joakim Mogren, as far as we could see, was not in attendance.
Metal Gear Solid V is a "Realistic Espionage Action Game in an Open World Environment." Environmental elements like wildlife, passage of time, and changes in weather will immerse players in a more realistic world.