While neither is a hundred percent affirmative, both Tim Minear and Morena Baccarin have chipped in their two cents. Two facts to remember:
1) It's unlikely that the Firefly comeback would happen without involvement of 20th Century Fox
2) Fans remember what stars they like say
@CancelledAgain (Tim Minear): @stuxmusic if I were to revisit Firefly, at least the moment, it'd have to be via 20th, as they own my ass. And other parts. [link]
@missmorenab (Morena Baccarin) “@stuxmusic: @missmorenab do you support the fight to get Firefly back on TV? www.helpnathanbuyfirefly.com” People! You know my answer is a
No, I didn't copy that badly, Morena's tweet ended there. However, it does lead us to conclude that the fans know the answer already, so when I got the following tweet, I assumed I could take it as a yes. Of course if I'm wrong about that, it'll be changed!
@kaiserjose1: @HelpNathanBuyFF @missmorenab @stuxmusic I've been to several Firefly cons w/Morena in attendance. Answer is definitely yes!
These two are definitely more on the Sketchy side, because we're only taking it for granted that we think Morena is a yes, and that Fox would head this, thus involving Minear. However, at this point, sketchy is better than no! Also, I finally found a picture of Jose Molina! Now we're rolling, the score card looks a little like this: