For the 3DS
You start off as a dinky little villager off to reclaim crystals from dangerous dungeons in order to secure the survival of your dinky little village. You start off as a Freelancer (as per any FF game with a job system these days) and can advance into 10+ jobs later on.
Not much is known about the story but it will be following a quest structure not unlike Final Fantasy: Crystal Chronicles, and to some extent, Monster Hunter.
Essentially it's a dungeon-crawling love child between FF:CC and MH. I DON'T CARE IF IT'S AN ATTEMPT TO CASH IN ON MH'S SUCCESS, I'M HYPED. I MISS THE EVER LOVING CRAP OUT OF FF:CC.
Japan release date is December 18th. Crying about NA release confirmation right now.