Captain America's shield is seen shattered; it can be speculated it may be a result of an amped-up Ultron who possibly gets his hands on Vibranium. Not even Thor's hammer broke Cap's shield. If vibranium does play in as a factor, perhaps we'll get to see Wakanda and Black Panther.
The next prop reveals what may be an early version of Ultron or one of Ultron's first drone creations. Yesterday during the Marvel panel at Comic-Con, a scene featured the first attack by Ultron against the Avengers. Cosmic Book News actually posted the scene details ten days ago.
Marvel also previously released a prop for Ant-Man.
"The Avengers: Age Of Ultron" hits May 1, 2015 directed by Joss Whedon starring Robert Downey Jr., Chris Evans, Chris Hemsworth, Scarlett Johansson, Mark Ruffalo, Jeremy Renner, Samuel L. Jackson, Elizabeth Olsen as Scarlet Witch, Aaron Taylor-Johnson as Quicksilver, Paul Bettany as Vision, with James Spader as Ultron.
Head on over to the Cosmic Book News Avengers movie hub for more.