Yoshitaka Amano and Nobuo Uematsu are connected to another fantasy game, but not a "final" one. Level-5 hired the Final Fantasy artist as an illustrator for Fantasy Life. Amano also created cover art for the game’s mini-soundtrack CD. That’s a bonus for people that pickup Fantasy Life at launch.
Fantasy Life’s music is composed by Uematsu who scored many Final Fantasy titles before starting his own company, Smile Please. Fantasy Life comes out in Japan on December 27.