Joss Whedon has been talking about the script for Wonder Woman recently "I think [the script will] be done in a few months' time, and then I give it to the studio and they'll say, 'Boy, is it not done!' So, you know, it's a process. It should take some time, but I'm well into it, and I'm having the time of my life."
He also said that his film version will be a origin story like Batman Begins "What's exciting is, like, Batman Begins basically really did a wonderful job explaining exactly why he was a bat and why he had everything on his costume that he did. That's the joy of doing an origin story of Wonder Woman. Why does she wear the bracelets? Why does she use the lasso? Like, ... where does all that stuff come from? ... And I have answers for all of that, and it's really fun. So it's not a reinvention like, 'Oh, she's going to dress like Trinity.'" He also said "I want to see Wonder Woman as I know her and see her, [and] not ... [just her] star-spangled panties. But she wears the Wonder Woman outfit, and she has the bracelets and all the accoutrements. ... The lasso and, if I can make it work for the plot, the invisible plane. I have a take on it that I think is cool. It's just I'm structuring the plot, and I've got to find a place for it. But I think people want it, and I think I can do it without ... it being campy, believe it or not. And I respect those things. I, in fact, love them."
He did say that Wonder Woman will feature his typical dialogue as seen in Buffy, Angel and Firefly "Absolutely. Wonder Woman's perspective is very serious. But that's what's so funny about her. She doesn't understand the world...She's not a wisecracker. But at the same time, she's not going to miss an opportunity... Usually, people I write are very, very down to earth and she's the opposite. She's somebody who is supposed to be Wonder Woman and spend her life being Wonder Woman but then she's still as vulnerable and as new at it as anybody else, but she's the opposite of every character I've ever written". He said about casting Wonder Woman that "There's a list. But the list is only in my head" however he also mentioned that he would like to have Lynda Carter for a cameo in the new film "If it's right for the movie. I think Lynda Carter's great...If I found something that was right, absolutely, but not if it takes you out of the narrative".