Remember the new Mystic Artes being added to the PlayStation 3 version, such as Rita Mordio's Indignation (one of the staples of the series)? It appears they were initially planned in the Xbox 360 version.
The port includes numerous extras and changes, such as a brand new character, Patty Fleur, the addition of new bosses like the Sword Dancer, Flynn being playable for more that just one battle, among other changes. The game will also be fully voiced and will include new and altered scenes, such as Yuri fighting Don Whitehorse when the party visits Keiv Moc.