so if ground zero was just a prequel (and some people saying a demo) of phantom pain and it was very short,that means when phantom pain will come out it would also have ground zero implemented to it?
No. Ground Zeroes is a prelude to the Phantom Pain, but it's still being sold as a separate game.
Possibly, maybe in a GOTY edition or collection of some sort somewhere down the line. Treat this as a Gran Turismo 5 Prologue/Gran Turismo 5 sort of a deal.
