Article for those who dont want a video: https://www.gamesradar.com/games/final-fantasy/after-13-years-a-new-version-of-final-fantasy-7-is-replacing-the-current-version-on-steam-and-square-enix-hasnt-explained-whats-different/
Steam: https://steamcommunity.com/games/39140/announcements/detail/514107648813039663
Square Enix has announced a brand-new version of Final Fantasy VII for Steam. This is not a patch. It’s a replacement.
The existing release will be renamed FINAL FANTASY VII 2013 Edition, while a new version becomes the default Steam listing. Existing owners get both versions for free but save files will NOT be compatible between them.
I say the Remake is basically a complete new game. It shouldn’t have been called Remake, but more like “Inspired by”. You don’t need to play the original game in my opinion, if you want to play the Remake. To me those are two separate games. And that comes from someone who says the original FF7 is the best videogame of all time.