Iron Man's Mark 45 Armor Debuts in New Avengers: Age of Ultron Trailer

Today's Avengers: Age of Ultron trailer debuted a number of cool new things, but one of the ones that's harder to spot than many is a new version fo the Iron Man armor.

A number of our readers have pointed out that the new armor, seen above, is the Mark 45 Iron Man armor, as seen in the newly-released LEGO set seen above and at left.

Other than the aesthetic changes, we don't yet know what the difference is between the 45 and previous iterations (although obviously the 43 is what we've seen in Iron Man 3 and the 44 is the Hulkbuster armor everybody loves).