DarkCryo Entertainment think so. The unlikely project seemed doomed due to an unauthorized use of the IP, but that may have changed.
DarkCryo posted a notice on the project's Facebook page indicating that Fox has given something of a go-ahead: "With the well wishes of Fox Entertainment Group, we have reactivated the FUO MMORPG Facebook page in preparation for our upcoming Kickstarter campaign. A popular alpha launch may re-awaken licensing consideration, in which case we may then include an expansion pack containing derivative content."
According to the counter on the front page, the crowdsourcing attempt to fund further development will begin in 16 days. Firefly Universe Online was officially (or unofficially, as the case may be) announced back in June of 2011.
[Thanks to Tarka for the tip!]
[Update: This "announcement" has since been alleged to be a hoax.]