http://en.wikipedia.org/wiki/Alien_(franchise)
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Future filmsAround the release of Alien Resurrection, Joss Whedon wrote an Earth set script for Alien 5, which Weaver disliked.[9] Before 20th Century Fox greenlit Alien vs. Predator, James Cameron had been working on a story for a fifth Alien film. Alien director Ridley Scott had talked with Cameron, stating "I think it would be a lot of fun, but the most important thing is to get the story right."[10] In a 2002 interview, Scott's concept for a story was "to go back to where the alien creatures were first found and explain how they were created", however he has not shown interest in pursuing the project.[10] On learning that Fox intended to pursue Alien vs. Predator, Cameron believed the film would "kill the validity of the franchise" and ceased work on his story, "To me, that was Frankenstein Meets Werewolf. It was Universal just taking their assets and starting to play them off against each other...Milking it."[11] On December 5, 2008 Sigourney Weaver hinted in an interview with MTV that she and Ridley Scott are working on an Alien spinoff film which will focus on the chronicles of Ellen Ripley rather than the Aliens.[12]
In May 2009, Carl Rinsch signed on to direct a prequel, which Ridley Scott and Tony Scott will produce. Tony Scott said filming may begin later in 2009.[13] However, Fox would prefer Ridley Scott direct the film.[14] In July 2009 it was confirmed that Ridley Scott would be returning to direct an Alien prequel with Jon Spaihts writing the script.[15]