Square will probably go crazy with the remasters and re-releases in 2015 because their 2 biggest guns are still a little bit off. I've said before I wouldn't be surprised if FFXV makes it out by the end of 2015 ... in japan but when I say that I'm implying that it might be out the last week of december at the earliest- a release date similar to FFXIII way back in 2009.
To that end, I suspect Squaresofts lineup of games for all of next year , keeping in mind an international release schedule will go as follows -
Spring- FFXIV: A realm reborn : Heavensward , Final Fantasy Type-0 HD with ffxv demo, Final Fantasy 7 HD for PS4 (digital only), FFX/X-2 HD for PS4 (have a way to send my save file to my ps4 from my ps3 and I might just bite)
Summer- Final Fantasy 8 HD for PS4(this will be the upscaled PC edition on console)
Fall- Final Fantasy XIII : Lightning collection (contains XIII,XIII-2,LR) for PS4 (they've ported them to PC and seem to be adding 1080p at least so it'd be easy to port them to ps4)
Winter- FFXV (japan only) , Kingdom hearts 1 + 2 for ps4(possibly with all the same extras as both standalone ps3 versions but it would be full priced)
Generic 2015 - Bravely Default 2 , dragon quest warriors
Wishful thinking - Dragon Quest 7 3DS in english , Dragon Quest X in english for PC at least.