Spoilers for "Peacemaker" season 2, episode 1 follow. Can we expect to see Superman (David Corenswet) pop up in "Peacemaker" season 2? Ok, technically, he already did in the revised season 1 recap, but he was kept in shadow and almost certainly played by a stand-in. Regardless, "Superman" director and "Peacemaker" creator James Gunn is broadcasting the connection between them. (He did have John Cena cameo as Peacemaker in "Superman.") In an Instagram post encouraging his followers to check out "Peacemaker" season 2, Gunn called the show a "'Man of Tomorrow' prequel," referring to his just-announced "Superman" sequel. Look, Gunn...