Following the successful release of Valkyria Chronicles on PC a few years ago, Sega has been working to revive the Valkyria franchise with Valkyria Revolution last year and the first true follow up to the original now in Valkyria Chronicles 4. Both Valkyria Chronicles 2 and 3 were constrained by handheld hardware that the developers felt didn't let them make a proper full sequel to Valkyria Chronicles.
Now, they get a chance with Valkyria Chronicles 4, a game aiming to be that sequel.
Here's a description from the Steam Store page:
A Continent Engulfed in the Bitter Flames of War!
Valkyria Chronicles 4 takes place in the same timeframe as the original Valkyria Chronicles, but with an all-new story focusing on Squad E of the Federation. Commander Claude Wallace and his childhood friends set out to fight in a desperate war, but bone-chilling blizzards, waves of imperial soldiers, and the godlike powers of the Valkyria stand between them and victory.
The BLiTZ Battle System and the CANVAS Graphic Engine return!