Metal Gear Solid V: The Phantom Pain will be released between Q4 2014 and Q1 2015. I strongly recommend to watch the E3 2013 Trailer and the E3 2014 gameplay demo in particular. The gameplay demo is presented in 1080p with 60fps and looks really amazing! A few more examples of the gameplay mechanics and hints at a multiplayer feature are covered by the Gamescom 2014 gameplay demo.
Since I blogged about the Fox Engine and the first teasers of Metal Gear Solid: Ground Zeroes at the beginning of 2013 I'm fascinated by the graphics and details Kojima brought into these games.
Metal Gear Solid: Ground Zeroes, Metal Gear Solid V: The Phantom Pain and Silent Hills are definitely three good reasons to buy a PS4 in the future.