James Gunn is getting closer to launching his own DC movie and TV universe. The first film in the relaunched DC Universe will be Gunn’s own Superman: Legacy. (Gunn is now also the co-CEO of DC Studios with Peter Safran.) It will star David Corenswet as the new Superman and Rachel Brosnahan as the new Lois Lane. Although Gunn wrote the script a while back and selected his lead actors as well, work on the film was paused for much of 2023 due to the writers and actors strikes. With both strikes resolved last fall, Gunn has now assembled the rest of the film’s cast and finalized the script. The mo…