I copied/paste from IMDb.com board of SVU
http://www.nationalledger.com/artman/pu ... 0980.shtml
SOMETHING NEW: "Law & Order: SVU" executive producer Neal Baer reports, "We're bringing in a new assistant DA character, a woman. I don't know who's going to play her yet, but I know what her background is. She's in the process of getting a divorce, coming back to New York City to take a job after living in D.C. In the job she had previously, doing policy work on women's issues, she felt she was always involved with statistics and she wanted to be out working with people."
The new character replaces Diane Neal's Casey Novak. "She played the part for five years -- the longest ADA of any (Dick) Wolf show -- and she wanted to go out and do new things. She's really funny and she'd like to do comedy," says Baer.
Mariska Hargitay and Chris Meloni "work probably every day. Everyone else is back," notes Baer, who also informs that the writers are nine scripts into next season's shows already, with a mid-July production start, barring a strike. And speaking of Emmy nominations, "L&O: SVU" has been so loaded with stellar guest star performances, the show's For Your Consideration trade ads have included double page spreads, with names including Rhea Perlman, Cynthia Nixon, Aidan Quinn, Bill Pullman, Melissa Joan Hart, Erika Christensen, Stephen Collins and Robin Williams -- the latter of whom went evil to play a sick sort who poses as a police officer in order to trick other people into committing crimes in the show's 200th episode.
"We were thrilled to have him," Baer says. "We always pride ourselves on getting really wonderful actors, and this was an amazing year."