Given Square's current stance on western Vita releases, there is no way we are getting this RPG battler, so enjoy the Japanese trailers while you can. SaGa Scarlet Grace looks to have massive worlds to explore and fun battle systems, all neatly shown off over this five-minute clip. The game is out this week in Japan, if you fancy an import.
P.S. for comedy value, and a little understanding of the game, you have to read the NeoGAF thread dedicated to the game.