The Producer talks a bit about the difference to the original game.

• For the Break mechanic, each enemy has a set shield value, and when that value reaches zero, enemies are stunned, meaning that all attacks performed against them count as critical hits
• you are able to summon party member to do quick actions like healing, attacking and so on
• fast travel to field area and initiating private actions from anywehrer inside a town
• obliously the grafic is different