We all remember the ill-fated attempt by Tim Burton to bring Superman back to the cinemas in the mid 90's. It has only been fairly recently that we have gotten a glimpse at what might have been via released concept art from the film and by Hasbro for the toys. Today website ComicBookMovie has gotten a couple of pictures of unreleased concept art of Lex Luthor's ultimate weapon in the film. The art comes from conceptual artist John Mann, who was brought on board at the beginning of the project. It is apparently some sort of orbiting space station that was sure to give Superman some headaches in the film.
"The confirmed details of Wesley Strick's script indicate that, like the previous versions, it followed the "Death of Superman" story. A notable departure from that work is the fact that once Brainiac arrives on Earth, he and Lex Luthor eventually merge into a single entity dubbed "Luthiac". Thematically, Burton and Strick worked to underscore Superman's alienation by virtue of the fact that Superman (Kal-El) is -- literally -- an alien." - Superman Wiki