Uchiha Shisui is joining Naruto Shippuden Ultimate Ninja Storm Revolution. Not only Shisui is playable character, but more Information about his story with Uchiha itachi will be revealed in the game's story mode just like the Origins of Akatsuki.

The scan also states that the Japan is going to get the game this fall. No exact date has been released.
Uchiha Shisui Joins Naruto Shippuden Ultimate Ninja Storm Revolution
Scan credit goes to ANN.

Namco Bandai has mentioned several times that the game will contain more than 100 playable characters so the new characters keeps on joining Naruto Storm Revolution roster. Besides Uchiha Shisui, Edo Kages and Mecha Naruto have already been announced for this game along with the Ninja World Tournament mode and Ultimate Team attacks of characters. This game will be available only for PlayStation 3 and XBox 360 gaming platforms.