Debney himself confirms that he's going to score Iron Man 2
(or is close to getting the deal) in an audio interview posted on Filmmusicsite.com today, check out the link here
. Click play and fast-forward to 32:22, that's when Debney talks about it.
He says he'll probably compose the score from scratch, but is quick to say that he liked Djawadi's score in the first film.