Although Square wouldn’t go into too many details—and they wouldn’t say how many episodes FFVII REMAKE will be—they did send over this statement:
It means instead of concluding in one entry, multiple entries are being considered in development. Each entry will have its own unique story. As a gaming experience, each entry will have the volume of content equal to a full-sized game.
for better or worse it looks like FF7Remake is gonna become an IP all on it's own with a bunch of games