Looking back, it feels a bit strange that Disney and co. has chosen to reveal so much about the sequel to the Avengers. The only things we found out about the first one were things that we knew were going to be included from previous films. Granted, that's mostly all there was, but the Chittari were kept in the dark until the very end. That's certainly not the case with Age of Ultron, in which the as-of-yet unseen villain is name-dropped. There's quite a bit else that has been revealed.