Iron Man director Jon Favreau has posted an update on the production on his official Blog:
Gwyneth Paltrow has been cast as Virginia Pepper Potts. I met her on an indie called Mrs. Parker and the Vicious Circle many years ago. We begin filming in eight weeks.
Stan Winston is working on the suit. Sets are being built. Fergus and Ostby (Children of Men) are working on the script. Matty Libatique is shooting it. Everything is really coming together.
The movie, also starring Robert Downey Jr. and Terrence Howard, opens May 2, 2008.