Konami have shared an extended look at Metal Gear Solid V, fresh out of Tokyo Game Show, including an English video, which is the opening to the game. Note that Konami are now describing Ground Zeroes as the “opening” to Metal Gear Solid V, despite prior claims that it would be an entirely separate game.
Metal Gear Solid: Ground Zeroes – Opening (English)
Metal Gear Solid: Ground Zeroes – Play Demo
Metal Gear Solid V – Side Ops (TGS 2013 Special Mission)
Perhaps Ground Zeroes will be included as part of Metal Gear Solid V, but will also be released separately, as a “pilot” of sorts, in order to let players get a taste for the game, before they put their money down for the full version.