Square Enix is teasing a new game and it feels tied to Final Fantasy since a teaser video has a glowing crystal in the background. The movie starts out saying "7 days of meteorites" before it flashes words like crystal and summons. Pictures (and text) reveal familiar Final Fantasy summons Diablos, Titan, and Odin.
Yusuke Naora, art director from Final Fantasy Type-0, and Suikoden Tierkreis artist Masaki Hirooka are tied to the unnamed game. I wonder if this is Final Fantasy Dimensions. Square Enix registered a trademark for that or if this is the ten million troops game. Whatever it is, the secret title appears to be slated for release in summer 2012 on unannounced platform(s?).