The Metal Gear Survive beta is now available on both PS4 and Xbox One. The beta runs through January 21 and features two maps, three missions, and live events, according to Konami. As described below, those who play the beta will receive in-game bonuses in the full version, should they decide to purchase it.
[Update] Konami has clarified on Twitter that, as of yet, the Metal Gear Survive beta is not available for PlayStation 4 in America. However, it is now available for both PS4 and Xbox One in all other regions.
More info at https://www.gamespot.co