I can't answer that yet. If it blows me the fuck away then yeah ill get it day one.
How will it blow me away? Obviously if it had FFXVI (I think FFXV will be PS3) on release. Full backwards compatibility. Was $299 or less (please SONY for the love of god).
Otherwise I'll wait till a few months before the next FF or possibly before if it has reached critical RPG mass.