Metal Gear Solid V: Ground Zeroes will make use of the PlayStation 4 upgrade program. This service will enable people who purchased certain PlayStation 3 games to upgrade them to the PlayStation 4 version via the PlayStation Network Store for a reduced price. Since Ground Zeroes will launch on both generations, this will apply to that game as well.
The official Japanese PlayStation website that shared the news today states further details will be announced later. Since this has been posted on the Japanese site, it’s still unclear if it applies to other regions as well.