Sounds like something that would come up at a shareholder's meeting, given the dates look like they represent Konami's fiscal year.
Edit:
"Hideo Kojima made a splash during E3 2013 with a lengthy, emotional, and amazing trailer for Metal Gear Solid V: The Phantom Pain. With the title now set for release on PS3, Xbox 360, PS4, and Xbox One, many are wondering when Konami will release The Phantom Pain to a world of anxious Metal Gear Solid fans. On Aug. 14, Konami released information – shared via David Gibson – concerning the release of Metal Gear Solid V and the wait could be a long one.
According to Gibson, Konami will release Metal Gear Solid V: The Phantom Pain some time in 2014 or early 2015. Specifically, the release will take place during the next fiscal year – between April 2014 and March 2015. Obviously, this is a large release window and does not provide us with an exact release date, but it does rule out a late 2013/early 2014 release.
Gibson also shares that Konami will release a smaller, unannounced Metal Gear Solid title before March 2014."
Source:
http://www.examiner.com/article/new-metal-gear-solid-v-the-phantom-pain-release-date-details
Additional source:
https://twitter.com/gibbogame/status/367505382903517185
The placeholder could be for the smaller title (Ground Zeroes?) being released separately from TPP, provided Konami still plans on using this business model.