Jon Favreau recently wrote on his offical blog about two kinds of armored suits that will be featured in the upcoming Iron Man movie.
Favreau said; "Let me confirm a few things: The movie will contain both the gray suit and the gold and red. The light you see in the photo on Robert's chest in the USA Today article is the chest piece glowing through his shirt. He is in captivity and forging the mask of the Mark 1."
He also commented on the work coming from Winston Studios; "and [Winson Studios] are busily at work as we speak. We are exploring ideas for teaser trailers, though no date has been decided. We are planning to attend San Diego Comic-Con. [Jeff] Bridges is bald and plays Stane. The movie is on schedule and could not be going better."
As shooting continues Iron Man is working towards a May 2008 release.