I think Iron Man 2 was a near certainty even prior to this weekend's boxoffice numbers.
Don't believe me?
Marvel Press release says:
Iron Man 2, on April 30, 2010
Thor on June 4, 2010
And,
Marvel is planting its feature film stakes for summer 2011 with an Avengers-themed summer - a two-picture project which will debut on May 6, 2011 with The First Avenger: Captain America (working title), followed by The Avengers in July 2011.
Of the lot, Thor strikes me as the one most likely to fizzle. Just based on potential appeal of the characters.
