At today’s GDC panel, Auteur game designer Hideo Kojima proudly confirmed that after months of speculation, The Phantom Pain is actually, definitely, Metal Gear Solid V.
A new trailer and gameplay footage displayed content that we’ve previously seen in trailers for The Phantom Pain and the other upcoming Metal Gear title Ground Zeroes, which has also been confirmed as being a section of this game. The initial trailer below added new angles and content that was previously unseen, backed by Garbage's Not Your Kind Of People
Following on from that, more of The Phantom Pain’s gameplay was shown, displaying Snake recovering from the effects of a 9 year long coma while trying to escape the hospital that housed him. This is shown below:
Kiefer Sutherland from TV's 24 is voicing a character named Ishmael, whose face is heavily bandaged like the assumed director pre-announcement Joakim Mogren.
Kojima informs us that after this on-rails section, everything else in the game is open-world.
This demo was running on PC. The game is intended to come out for PS4, but there's no announcement of the game showing up anywhere else yet.
No word was given about who Joakim Mogren actually was. Perhaps we’ll never know.