Square Enix announced that there will be a sequel to the Final Fantasy themed brawler. The announcement was revealed in the newest Shonen Jump.
Dissidia Duodecim: Final Fantasy, while unpronounceable, is due to arrive sometime in Japan in 2011. So far Kain (FFIV) and Lightning (FFXIII) are the only new additions to the game so far. I’m sure they’ll announce much more information at this years upcoming Tokyo Game Show.