Winner of more than 200 Game of the Year Awards, Skyrim Special Edition brings the epic fantasy to life in stunning detail. The Special Edition includes the critically acclaimed game and add-ons with all-new features like remastered art and effects, volumetric god rays, dynamic depth of field, screen-space reflections, and more.
The original version is still available for purchase, it’s just delisted, meaning you can’t search for it in the store.
Haven’t bought the special edition, but probably will if I replay it some time. It fixes the alt+tab mouse bug and seems to have good mod support.