For one... well, look at it. The studio is adopting a "cute" art style that it believes will appeal to both newcomers used to mobile games as well as series veterans (that's debatable -- we'd say it's just adapting to the reduced processing power). The Pocket Edition also adopts "casual" touch controls, and it adopts more of a top-down perspective than its console counterpart. It looks like many of the core mechanics are still present, though, including cooking.

There's no question that Square Enix is trying to wring as much as it can out of its investment in Final Fantasy XV with the phone-friendly version. At the same time, it also speaks to the importance of mobile: the developer sees mobile gaming as big enough that it can justify bringing an expansive RPG (even if it's a streamlined version) to platforms it might have ignored in the past.