For those still yet to play the final (unfinished) entry of the series from Kojima..
Konami has announced METAL GEAR SOLID V: THE DEFINITIVE EXPERIENCE. Available for PS4 and Xbox One including MGSV, Ground Zeroes and Metal Gear Online all bundled as one entity. The edition will include a selection of DLC for each game, as well as additional Mother Base currency.
MGSV: the Definitive Experience is scheduled to be released on October 13th for PS4 and Xbox One at a retail price of $79.95 AUD.
Still no word on Chapter 3 though.