The game that has yet to be named is being developed by Omega Force. Omega Force is the company that is well known for developing the Dynasty Warriors and Samurai Warriors series.
Koei Tecmo has yet to reveal much about the game. So, other then the trailer, what the game play consists of or what kind of game it will be has yet to be known. Koei Tecmo has developed many different kind of games, which leaves us only to guess what Koei Tecmo has planned for the Attack on Titan game.
What is known about the Attack on Titan Game is that it should be releasing on the PlayStation 4, PlayStation 3, and PlayStation Vita sometime in 2016 according to Koei Tecmo.