In case you missed it, Marvel released a new (slightly different) version of the 'Avengers: Age of Ultron' trailer yesterday (11-12-14). It has a few seconds of footage of the villainous Ultron that wasn't in the original trailer.
USA Today's Kelly Lawler has conveniently highlighted the subtle differences in an article you might want to check out.
I admit, this isn't earth-shattering news, but it's fun stuff for Marvel fans.
Check out the video at the link below (via USA Today).