Square Enix revealed that Final Fantasy XV will be released on PC sometime in early 2018. The company has partnered with Nvidia for the PC version, utilising various pieces of Nvidia GameWorks' graphical technology. The press release listed the following as "recommended" specs (update: these specs are likely incorrect and will be changed by launch):
Monitor: supports 4K & HDR
GPU: Geforce 1080Ti
CPU: Intel i7 3.4ghz or Ryzen 7 1700
RAM: 16 GB
HDD: 170GB
5.1 or 7.1 surround headphone
Final Fantasy XV was originally released for PlayStation 4 and Xbox One in November 2016. The PC version will come with all the additional free content released for the console version as well as all of the paid DLC included in the season pass.