Yesterday Metal Gear Solid V: Ground Zeroes Director Hideo Kojima mentioned that there would have been an announcement in today's episode of Kojima Station, and the announcement has come.

During the broadcast Kojima himself mentioned that the platform exclusive missions included in Metal Gear Solid V: Ground Zeroes won't be exclusive anymore starting on May 1st. PlayStation gamers will be able to enjoy the mission with Raiden, while Xbox gamers will be able to play the mission with classic Snake. The "exchange" will be completely free.

It's relevant to mention that only the Xbox 360 version was directly mentioned as getting the formerly PlayStation exclusive Déjà vu mission, but that's probably just because the Xbox One version still hasn't been released in Japan, and the broadcast was intended for a Japanese audience.