Today Konami and Kojima Productions had quite a bit of information as well as new footage to reveal for Metal Gear Solid V: The Phantom Pain. During Tokyo Game Show they held a stage event where they revealed the two videos that you can find below, the first of which is showing Quiet as she arrives at the base and shows off her disappearing abilities while the second is a special mission in the game.
Also revealed in the second video is an AI system where players can call in support characters, such as Quiet, to help Snake in his missions by either providing covering fire or even infiltrating ahead of Snake and clearing a path.
Tokyo Game Show Trailer
TGS Gameplay Walkthrough