A few weeks ago, Famitsu magazine revealed that Naruto Shippuden: Ultimate Ninja Storm Revolution would be released this Fall in Japan, although no release window was revealed for the west. Today, Namco Bandai has revealed that the title will be available in North America in September, while a release date for Europe has yet to be revealed.
Namco Bandai has also revealed that just like Naruto Storm 3, PC players will also be able to get their hands on Naruto Storm Revolution via Steam. In addition, according to saiyanisland, the game's official website states that the title will feature a 118 character roster, although Namco Bandai has yet to confirm this.
Naruto Shippuden: Ultimate Ninja Storm Revolution will contain team jutsus and over 100 playable characters. The game will be available for Xbox 360, PS3, and PC.
Source: Namco Bandai