『蒼き革命のヴァルキュリア』特報映像
In a video teaser of Valkyria: Azure Revolution, the trailer reveals that the game will be released in Japan on January 19th, 2017.
The video also lists that a Playstation Vita version is being developed alongside the PS4 and will be released on the same day.
From an article from Gematsu, preordering Azure Revolution from the website will provide you with a "fully-voiced additonal story" to download on launch day.