Wow, that was a really cheesy and arrogant trailer IMHO. Deepest handheld RPG EVER?
Should be a decent DS RPG though. It's quite a beautiful game at least, using 3D character models on flat 2D backgrounds similar to the PS1 Final Fantasies. The game has been out in Japan since last year. It's coming to the US on March 17, and surprisingly, 5 days earlier in Europe on March 12.