Actually, there has been a good amount of news released for a game that releases in Japan in late 2008. The games title is Kingdom Hearts 358/2 Days. It takes place during the time period of Kingdom Hearts: Chain of Memories after Sora entered the deep sleep. The game will explore the time from Roxas's creation until his confrontation with Riku that leads to his placement in the data-based Twilight Town in Kingdom Hearts II. Tetsuya Nomura has noted that the game's prologue will cover the "birth" of Roxas, but the gameplay will start from when he enters the Organization. Nomura has stated that the player will understand the meaning of "358/2 Days" at the very end of the game. The initial trailer showed most of the events in Twilight Town. Organization XIII's headquarters and Wonderland have been featured.
The game will also feature both single player and multiplayer gameplay. The single player mode will be story based focused on Disney worlds from past games and will progress in days. The two modes will be linked in that character growth will be shared between them. Characters that have been stated that are going to appear in the game are Roxas, King Mickey, The 12 Organization XIII, and a new Organization XIII member.