According to afrom Square Enix producer Yoshinori Kitnase, the PC port of Lightning Returns: Final Fantasy XIII is coming into its home stretch. The development team are putting the finishing touches on the port as of now and they fully anticipate a release around the holidays.
The third arc of the series has been in development for the PC since the release of Final Fantasy XIII-2 in December 2014. It appears that PC fans of Final Fantasy XIII won't have to wait long to continue Lightning's adventures. More concrete details are promised to be announced soon.