Not sure. I learned of the edit from Oliver Harper’s Superman 2 retrospective. I have an app called B-Movies that is just a neater way of organizing Archive’s movies. It’s very recommended. Anyways, there might be an HD version that I’m not aware of, but I’m not sure. I heard of talks of Warner releasing it, but since Donner died, I’m not sure.
I don’t know. I don’t think Warner Bros cares too much for that anymore. I learned about it from Oliver Harper too. I heard Selutron abandoned the project, though.