FuRyu, the developer behind Unchained Blades, is teasing something called Project Legacy. Whatever the project is will be revealed in eight days, which means the news will pop up during Tokyo Game Show.
FuRyu continues to grow as a developer and publisher. Originally a maker of photo sticker booths, they started developing dungeon RPGs and picked up anime licenses like The Prince of Tennis. Most recently, they developed Lost Dimension for PlayStation 3 and PlayStation Vita.
The copyright on the teaser site says 2015 on the bottom so Project Legacy is most likely slated for next year.