Metal Gear Solid V: Ground Zeroes (Japanese: ?????????V???????? Hepburn: Metaru Gia Soriddo Faibu Guraundo Zerozu?) is an action-adventure stealth video game developed by Kojima Productions, published by Konami,[8] and released for PlayStation 3, PlayStation 4, Xbox 360, Xbox One and Microsoft Windows via Steam. It is part of a sub-series of prequels in the Metal Gear series, taking place after Metal Gear Solid: Peace Walker. Ground Zeroes stands alone as the first part of Metal Gear Solid V, acting as the prologue for the upcoming Metal Gear Solid V: The Phantom Pain.
From wikipedia and since the ending of GZ has a "To be continued in Phantom Pain", I'm guessing this will not be included, seems like a tech demo they made a game out of...
And it really sold me, just like the old PS demo for MGS 2 but 100x times better