There's still no word on a release date for Final Fantasy 7 Remake Part 3 yet, but Square Enix has already finished writing the plot at least

Final Fantasy 7 Rebirth offered a vast map, but if we think in terms of the original version, the third game will have the Highwind (airship), so we need to let people experience the world from a higher perspective. We will not cheat with the airship system, but challenge it head-on so that players can freely fly around the map.

There’s a lot of mystery surrounding the third game, but Kitase has previously teased the ways it might be different from the original PS1 title and claimed it will be 'exactly what the fans are looking for'.

Read at VG247