Final Fantasy VII Rebirth Ultimania, the official formula book for Final Fantasy VII Rebirth, was recently released and reveals a lot of interesting information, including interviews with the creators, some of which are excerpted below.
Kitase Yoshifan expressed his hope that the world of FF7 can continue after completing the remastered FF7 trilogy, but they first need to complete the third installment. He wants to finish the trilogy with a positive attitude and at the same time leave no regrets, but that's just his personal opinion on the matter.
He believes that the development of FF7 Rebirth is so efficient because they have retained the same staff as the previous game, and the third installment will also have the same development team.
Tetsuya Nomura said that the main script story of the third part has been completed, and recording may begin in the near future.
Drama writer Hiroaki Iwaki said that they will use the form of "side chapters" to complete the stories of the new characters in the remastered trilogy, and the third part will be the "curtain call" for these characters.