Superman II: The Richard Donner Cut (titled onscreen as simply Superman II) is a 2006 re-edited director’s cut of the 1980 superhero film Superman II.

With the recent passing of Terrence Stamp a rewatch of Superman II (1980) made sense to me. Since I’ve never seen the “Donner Cut”, now seems like the best time.

Outline of some of the changes, https://screenrant.com/superman-2-richard-donner-cut-differences-changes-explained/