I hope for the most part this rumor is true, EXCEPT the Iron Man part.
Sorry Disney but Iron Man's character and personailty does not fit Disney. Not to offend anyone, but Iron Man is Arrogant Schmuck Superhero, and is not somthing that represents Disney at all.
A better fit would be a TRON Light Cycle Experience on the Grid or something. It would be a much better fit for Tomorrow land.