Geoff Keighley introduced a five minute trailer for Metal Gear Solid 5 : The Phantom Pain as a parting gift from Kojima to Metal Gear's fans. It featured Big Boss's confidants talking about his plans for Outer Heaven, but featured no dialogue from the boss himself as voiced by Keifer Sutherland.
Teleporting female cyborgs were shown as Big Boss was rescuing Quiet from a medical facility. A man with a skull white face and a mask spoke about America. The trailer ended with Big Boss punching a mirror. To watch the full trailer, check the video linked in the tweet below.