Valkyria Chronicles was a PS3 game. Valkyria Chronicles 2 is not. It's a PSP game, and here is its localised title: Valkyria Chronicles 2: The Gaul Royal Military Academy.
Announced in the newest issue of Japanese game magazine Famitsu, the game is set in 1937, two years after the first game. Cadets from the Gaul Royal Military Academy are sent to suppress an insurrection in the southern part of in-game country Gaul.
The game's central concept is contrasting the world of the military academy with war. Valkyria Chronicles 2 is due out this winter in Japan.
Thanks everyone who sent this in!