Square Enix has confirmed that Final Fantasy XV will be released on PC in early 2018. The full title for this edition is Final Fantasy XV Windows Version, and it will support native 4K resolution as well as HDR 10. There are also options to push FFXV Windows Version to 8K, though I would imagine that would be beneficial for a very small percentage of players.
Additionally there will be a first person mode where you can see the action from Noctis’ viewpoint. The PC requirements have yet to be confirmed.
Source: Press Release