Singer is slated to begin production on his new film Jack the Giant Killer this summer and the site reports that Fox liked the script by Jamie Moss so much they want to fast-track the film for a summer 2011 release, which means Singer wouldn't be available to direct the project, due to his commitment with Jack the Giant Killer, which is a Warner Bros. film.
It was said that Fox is currently looking for directors for the film and it was also reported that the studio is looking to turn this film into a new trilogy. Moss' story was said to revolve around the origin of Professor Xavier and Magneto's conflict.
X-Men: First Class was released June 3rd, 2011 and stars James McAvoy, Laurence Belcher, Michael Fassbender, Bill Milner, Kevin Bacon, Rose Byrne, Jennifer Lawrence, Beth Goddard. The film is directed by Matthew Vaughn.