The listing reads:
Producers: Marvel, Kevin Feige
Executive Producer: Louis D'Esposito
Executive Producers: David Maisel, Denis Stewart, Stan Lee
Co-Producers: Jeremy Latcham, Victoria Alonso
Associate Producer: Karen Johnson
Director: Jon Favreau
Start Date: April 2009
30s, Eastern European, brilliant, gritty...
20s, beautiful, speaks several languages fluently and is equally proficient in martial arts...
Russian, 20s or 30s, at least 6'2", able to perform own stunts, has the build of a MMA fighter...
Fans of Marvel's comics may recognize the above three roles as possibly being the first and second Crimson Dynamo, and the Russian super-spy the Black Widow. Read the following excerpt from the Crimson Dynamo's Wikipedia entry:
The first Crimson Dynamo was also the creator of the armor: Professor Anton Vanko. A Soviet scientist of Armenian birth with a PhD, Vanko was the world's foremost expert on electricity. He built a suit that was wired up to perform electric miracles, making him a human dynamo. The Crimson Dynamo battle-suit allowed him to control electricity in all of its forms, allowing him to fire devastating bolts of electricity. It also allowed him to fly.
Vanko was a vain and cocky man, but he redeemed himself in the end. In their first encounter, the Crimson Dynamo battled Iron Man. After being tricked by Iron Man (who made him believe that his Soviet handlers were going to kill him though earlier Vanko's superior implied he was going to kill Vanko, anyway), Vanko defected to the U.S. and went to work for Tony Stark as one of his chief scientists. Soon the Soviets came to kill him for real. They sent their top agent, the Black Widow, and her one-time partner, Boris Turgenev, the latter of whom stole the armor and became the second Crimson Dynamo. Vanko died saving Iron Man by firing an unstable experimental laser light pistol at Boris, killing himself as well.
The three roles being cast certainly seem like they would fit Vanko, the Black Widow and Turgenev. We'll find out more as Iron Man 2 goes into production for its' 2010 release.