author=zaeran
I know I'm responding a bit late, (Went and played FFV!) but no, the class system is going to be a bit different than 5, for many reasons.
(1)For the most part, once you choose to go down a path, you have made a final decision. Each character with a Grant Board is granted atleast one Renege, as you can tell by the definition, Reneging allows the player to revert the previous class and go down another pass with all previous skills learned.
(2)With a level limit of 99, it will be impossible to achieve God Status with any normal character, even by giving them Haven fruits (Special fruits that raise certain stats). I may have a couple secret characters that can be unlocked with amazing ability. But at this point there is no plan to have these characters available during the normal story. The stat increases for most class will call for somewhat unbalanced characters relying on other party members.
(3) The job system is also it's own separate entity, consisting of 15 separate jobs that will play a role in exploration and relation to characters in the world, from Merchants to engineers.