Marvel has released a new trailer for this summer's inevitable blockbuster Avengers: Age of Ultron, and it seems as if this movie will have a much darker tone than the last Avengers. After rumbling with Thor in the last film, it seems that Iron Man will have to throw down with Hulk this time around. It's a good think he seems prepared. Avengers: Age of Ultron will hit theaters May 1, 2015. Are you excited to see it?