No, this does not mean you're getting more Firefly. Seriously: do not remotely get your hopes up.
The odds that there are any Studio Heads saying anything other than: "Well... Joss is nice and all... but you could give that lineup to Uwe Boll and get a similar result", are pretty slim.
PS: Joss - you killing people is becoming expected. Find another trope to run into the ground. Thanks.