As news days go, today is so slow that it practically going backwards. But we soldier on regardless. This isn't specifically about a movie, but it is related to one. Prior to the release of The X-Files: I Want To Believe, an X-Files comic book, The X-Files #0, will be released, filling in some gaps in the story so far. But whereas the film takes place after the end of the show, this will follow events in season 5. You can check out some of the pages at EW.com, here.
The story, written by X-Files co-writer Frank Spotnitz, is set during the time when Scully was suffering from cancer and her partner, Mulder, was on the run and convinced there was something suspicious about his fellow agent's illness. More comics are set to follow this one.