Been following this since yesterday. Apparently, William Hurt is written to play Thaddeus Ross in Ironman 3, although only IMDB states this. IMDB is flawed to all Hell, so we should take this with a pinch of arsenic, but if it's true, we might be able to spy a glimpse into the deal that solidifies the birth of the Red Hulk in a future Hulk sequel.
Evidence that I say supports this is AIM is involved in Ironman 3, the company that created Red Hulk under the leadership of The Leader and MODOK. It's almost certain MODOK won't appear, but a version of Rulk showing up as a result of AIM isn't too ridiculous of an idea.
Another point that might prove Hurt's name as being valid is that the actor originally credited to play Falcon has a role in Ironman 3. So...maybe William Hurt is also slated to appear?