Square Enix revealed that it is working on a mobile Final Fantasy title by unveiling a Japanese language website for a game called Final Fantasy Tactics S.

The website reveals that the game will see a release on Mobage, a social network games publisher and portal, which is available for smartphone users in North America, China and Japan. According to the website, Final Fantasy Tactics S will support both iOS and Android-based devices.
Square Enix to release Final Fantasy Tactics S on Mobage | Polygon