Whedon says the decision gives "Serenity" a better shot at audiences because the film's original April 2005 slot is "crowded with a lot of titles aimed at a similar demographic." He stresses that the push is not bad news: "This isn't about a lack of confidence in the film -- in fact, they [the studio] told me this before they even saw it. And now they have seen it, and unless they're way better liars than I'm used to, they dug it."
"Serenity" is a big-screen adaptation/continuation of Whedon's short-lived sci-fi TV show "Firefly." -- Mac Slocum