The current schedule of big names from Square Enix this fiscal year doesn't include Kingdom Hearts III or the Final Fantasy VII Remake, meaning they're after March 2017.
The World of Final Fantasy, which was announced back at E3 2015, and Kingdom Hearts HD 2.8 Final Chapter Prologue is definitely coming though as they get 2016 stamps on them. Square Enix's current fiscal year ends March 31st, 2017.
Other major titles for 2016:
• Deus Ex: Mankind Divided - (PC, Xbox One, PlayStation 4) August 23rd, 2016
• Final Fantasy XV - (Xbox One, PlayStation 4) September 30th, 2016
• Rise of the Tomb Raider - (PlayStation 4) Holiday 2016
• World of Final Fantasy - (PlayStation 4, PlayStation Vita) 2016
• Kingdom Hearts HD 2.8 Final Chapter Prologue - (PlayStation 4) 2016
• SaGA SCARLET GRAVE - (Japan) 2016
Kingdom Hearts 3 was first announced back at E3 2013 and is the 11th game in the overall series, and it is powered by Epic Games' Unreal Engine 4.