To those 2-3 fans holding out hope, I'm afraid they've been dashed. Writer/director Joss Whedon has finally confirmed that there will never be a "Serenity" sequel writes Slashfilm.
"There's no sequel, no secret project regarding Serenity or somesuch and I'm not even sure how anyone thought there was talk there. So let's put that to bed and smother it with a pillow" says Whedon.
Serenity was a 2005 science fiction western film set in the universe of the cancelled Fox television series "Firefly". Including it's home video release, "Serenity" has still yet to come close to earning back it's $39 million budget.