Nathan Fillion had been dropping heavy hints about this in the last week or two.
Today he announced that he
hopes for Firefly to return
if it can find a home
It will be an animated series voiced by the original cast. (Apart from Ron Glass, may he rest in peace.) It takes place after the original series.
Joss Whedon has given his blessing.
They have two show runners (who apparently met while working on Firefly) Marc Guggenheim and Tara Butters.
They have a script.
They have been given the rights permissions by Fox/Disney.
What they don't yet have is a 'home' for the show.
Nathan needs to pitch that to interested parties.
I'm hopeful but hesistant. For me, Firefly was almost perfect but that might be because it didn't live long enough to go wrong. Plus today say Hulu decide not to go forward with the Buffy reboot.
https://www.manchestereveningnews.co.uk/news/tv/firefly-animated-reboot-greatest-show-33596783