In TV Guide's Ask Ausiello, he is asked about the casting of Wonder Woman and says:
The good news: Such a chance actually did present itself last Thursday, when Joss phoned me during a break from editing Serenity to chat about lassoing Wonder Woman and resurrecting a certain 150-year-old, English vamp on WB (more on that later).
Obviously referring to the rumored Spike TV movie. PLEASE GOD LET THIS HAPPEN!!
I followed the link on that and found out they are talking about a movie, and it's not supposed to be a prequil.
"Well, as it happens, I wrote the damned SOP," Illescue half snarled, "and as of now, you can bar those jackals from any part of this facility until Hell's a hockey rink! Is that perfectly clear?!" - Dr. Franz Illescue - Honor Harrington: At All Costs
"I don't know what I'm do, or how I do, I just do." - Alexander Ovechkin</sub>
