Check out the original trailer for "Star Wars: Revenge of the Jedi."
George Lucas was originally going to call Episode VII "Revenge of the Jedi," but had second thoughts renaming it to "Return." They went so far with the original title even being used on movie posters.
Star Wars released the original "Revenge of the Jedi" teaser trailer. Check it out:
Watch the original teaser trailer for Revenge of the Jedi, which appeared in theaters before Star Wars creator George Lucas changed the name of the film to Return of the Jedi. This trailer features the completed Revenge of the Jedi logo, shows Luke wielding a blue lightsaber (in the final film, his Jedi weapon would have a green blade), and features a quick shot of Obi-Wan Kenobi before "spirit" effects were added.