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.



BTW if the new version comes out, you can keep this old one and get the new one for free (for owners of the old one). So maybe wait for the new version first, if its worth the changes. Just a suggestion.
Yeah, that’s why I decided to purchase it now. Get the old one while it’s still available and see what the new one is like.