SuperHeroHype has news that Robert Downey Jr. and Jon Favreau are both officially signed on for not only Iron Man 2, but also the Avengers. Also, Don Cheadle is confirmed/signed as the replacement for Terrence Howard as Rhodey in IM2, and also any future IM installments and/or the Avengers. More at the linky.
Awesome. The Downey/Favreau Duo all but ensures this movie will rock!