Hi, just finished watching a Farscape episode, and their website address was advertized. So, I went back there to see if it was still there, and I come upon this... (I am unsure of the dates that this was released).
http://www.farscape.com/news/index.html
"Farscape is a flagship show for The Jim Henson Company. We are proud of its achievements over the past four years, which have included international critical recognition, three Saturn Awards, and a recent Emmy nomination. As always, your show of support is a true inspiration for our company and has been integral to our success.
Although SCI FI Channel has chosen not to pick up a fifth season, The Jim Henson Company is in active development on a new Farscape film, an anime project and is currently discussing syndication of this highly acclaimed series. We are eager to move forward with the Farscape creative team in developing new projects that will resonate with our overwhelmingly loyal fan base."
So, it would appear that Farscape may not be dead, but just like with the original Star Trek, ressurected in the Movies.