It looks like the Mandarin role is still to be filled.
http://www.myentertainmentworld.com/mew/audition_newlisting.html
(Los Angeles, CA) - Send photograph & resumes ASAP to: Details Are only Available By Subscription.. Title: IRON MAN, Feature Film. CAST, Robert Downey Jr., Jeff Bridges, Terrence Howard, Gwyneth Paltrow; EXEC PROD, Jon Favreau, Ari Arad, Peter Billingsley, Louis D'Esposito, Michael Helfant, Stan Lee; PROD, Avi Arad, Kevin Feige; AP, Eric N. Heffron, Jeremy Latcham; DIR, Jon Favreau; SCR, Matthew Hollaway, Arthur Marcum, Mark Fergus, Hawk Ostby. Shoot Dates: March 12, 2007 (in Los Angeles). STORY: Based on the long-running Marvel comic book series, "Iron Man" tells the story of Tony Stark, the enigmatic heir to the Stark Enterprises fortune. A driven inventor and executive who seems to have it all, Tony is haunted by his dark side. Though he commands his empire by day, by night he secretly becomes "Iron Man," the living embodiment of decades of defense spending and innovation. Strapping on billions of dollars worth of state-of-the-art armor and weaponry each night to fight crime, terrorism and corporate espionage, Tony begins to crack under the strain of his fractured lifestyle and must ultimately confront the one enemy he can never beat - himself. Breakdown--
General Gabriel: 50s. A commanding officer with enormous presence. Although he can appear cold, he is in fact complex and thoughtful with a strong moral center;
Yinsen: 50s-70s, character could be from the Middle East, Afghanistan, or Pakistan. A mercurial character who has many talents but keeps to himself and shows little. At first he appears severe, but later reveals he has a great sense of humor, dignity, and fearlessness;
Raza: 30s-50s, a Middle Eastern character. An intense lead insurgent in Afghanistan, who speaks an indigenous tongue and English;
Gene Kahn: 30s-40s, Central Asian, handsome, impeccably dressed. A renaissance man for the new millennium, he has been educated on three continents, is just as familiar with Machiavelli as Sun Tzu;
Female Reporter: Late 20s-30s. Pretty but tough, she's an intellectual and fast-talking reporter who tries to outwit Tony, only to find herself a bit beguiled by his charms;
Kid: 9-11 to play 8 years old. This young boy looks Middle Eastern and must be agile, athletic and able to convey a range of emotions;
Mother: The boy's mother, also Middle Eastern;
Reporter: 30s, male or female, could be any ethnicity. Must have professional reporting background;
Beautiful Woman: 20-25, STUNNINGLY beautiful, model types, any ethnicity. (Posted: February 15, 2007)
It will be complete and utter bulls*** if he is
D
t:
. I can't find any reason to doubt Bridges is Stane at this point. If memory serves, Favreau was dismissing the Howard Stark character also. 
