"Revamped graphics" means that the appearance or visual elements of something, such as a video game or a website, have been completely improved or upgraded. Full definition
The Switch version includes all previous downloadable content along with revamped graphics and assorted quality of life changes. (allgamers.com)
The normal quest is the same one from the original but with revamped graphics and gameplay mechanics. (linkshideaway.com)
Star Fox was released on the 3DS but it wasn't a new game in the franchise it was just a re-release, they basically just revamped the graphics for the 3DS like they did with The Legend of Zelda: Ocarina of Time 3D. (nintendotoday.com)