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.
Ding ding ding. If they had made changes to improve the game, they would be advertising those changes. No rational company invests time and money into improving a product without capitalizing on those changes. Best case scenario, nothing noticable changes, worst case scenario, they have added anti-consumer features, like drm, game store/3rd party launchers, sign-in, telemetry, ads, and other crap.