It is known that the title is an exclusive one-year thunderstorm for Playstation 4 and there is still no official announcement on the versions for other platforms, although their existence is very likely.
In particular, the one for PC seems almost certain, especially afterwards the celebratory trailer published on Youtube.
The video shows a message from the producer, Yoshinori Kitase, and is interspersed with gameplay fragments. In the initial parts of the video, the wording is clearly visible "Gameplay captured on PC".
It is clearly not an automatic confirmation of the existence of this version and it could simply be footage captured during development but, otherwise, it would be the first images of Final Fantasy VII Remake for PC.