According to an article in Wired: “Like Capt. Mal Reynolds stumbling in after a bar fight, the short-lived but much beloved sci-fi series Firefly will soon make an unexpected return, not as a TV show, but as a massively multiplayer online game.”
The game is being developed by Multiverse (whose Web site has been slashdotted, so don’t expect to be able to access it any time today). Could be very interesting, depending upon what they do with it.