Square Enix will be keeping an eye on this at a business stand point. What we know for sure is that FFVIIR, and FFXV will come out on PS4 first. A larger install base tends to bring it a bigger buck, so the NX will have to really prove itself to be worthwhile to release FFVIIR/FFXV on it because it has to compete against ps4 installbase of +37mil.
By the time the NX is out for sale, Nintendo will be relying on its own games to sell its system for sometime. A FFVIIR/FFXV port a year later mayhaps.








