This Marvel.com interview has a few more details direct from the source, among them that it’s based on the Ultron origin story rather than the comic arc of the same name, Ultron will have several different looks, and Hank Pym is not involved at this point.
Luke Y. Thompson has been writing professionally about movies and pop-culture since 1999, and has also been an actor in some extremely cheap culty and horror movies you will probably never hear much about (he is nonetheless mostly proud of them, as he met his wife on one). As editor of The Robot's Voice since 2012, he can take the blame for the majority of the site's content, all of which he creates because he loves you very, very much. (Although he loves nachos more. Sorry.)
Prior to TRV, Luke wrote for publications that include the New Times LA, Los Angeles CityBeat, E! Online, OC Weekly, Geekweek, GeekChicDaily, The L.A. Times, The Village Voice, LA Weekly, and Nerdist