It might be a good idea to put a bit more content in your post, honestly?
I can provide some of that content, though.
Last year Konami and Kojima previewed what were at the time billed as two separate games: Metal Gear Solid Ground Zeros and The Phantom Pain. The Phantom Pain was attributed to a Swedish developer known as Moby Dick studios which... didn't really seem to exist... and a CEO named Joakim Morgen (an anagram of Kojima) that was never seen in public until quite recently, and even then only with bandaids all over his face. The other pictures all look like photoshopped things of Kojima twice over.
Ground Zeroes looked to be a continuation of Big Boss's story after Peace Walker (so spoilers ahoy if you watch that trailer), and the Phantom Pain looked like some strange game involving escaping a hospital as an amputee during some sort of military attack.
Flash forward to today's GDC conference, where Kojima revealed that the two games were actually two different parts of the same game, with Ground Zeroes being the prologue and the Phantom Pain being the main game itself. Ground Zeroes was supposed to be open-world-esque, it remains to be seen whether the Phantom Pain portion follows the same rules.
Ground Zeroes follows up on Peace Walker, and Phantom Pain takes place 9 years after that. The gameplay is from the tutorial section of the Phantom Pain introduction, and the trailer is... well... a trailer.
At the time of the Ground Zeroes announcement speculation was that it would be released on Xbox 360, PS3, and PC. So far there's no confirmation of the PC version, though as far as I know the development version is running on a high spec PC currently.
Edit: apparently they're still two separate games? KOJIMA