In an interview with the Famitsu Japanese edition, the producers of the Final Fantasy VII Remey Yoshinori Kitase and Tetsuya Nomura talked about some details of the upcoming projects.
According to the developers, the team could not decide for a long time, to make the trilogy from the Final Fantasy VII, or to limit itself to two parts. If you believe the words of the nomura-san, then the developers themselves had no idea how many games will turn out in a series of remakes for a long time. And only when the work on the Final Fantasy VII Remake was completed, it became clear that the dilogy would definitely not be able to do.
This is mainly due to the fact that the development team wants to maintain all those locations that were in the original Final Fantasy VII. However, it is likely that the procedure for visiting the characters of locations may change somewhat.