At a press junket on Sunday, Jackson replied that...
"As a matter of fact, IRON MAN director Jon Favreau spoke to me at the Scream Awards last night, and told me that Nick Fury would have a much more prominent role in the second one (Iron Man II)."
Jackson also went on to say that he is looking forward to working with Don Cheadle who will be playing Jim Rhodes (and possibly War Machine) in the sequel