Final confirmation has come in, Paul Bettany, the current voice of JARVIS in the past Three Iron man movies plus The Avengers is going to be moving on to playing the Vision. Putting to rest long gestating casting rumors with Vin Deisel, Clark Greg, and others hinted at for the role. Created by Ultron as a weapon against The Avengers it could lead to some great fights for both sides with him spending most of his life as part of various Avengers teams. Add in the fact that Scarlet Witch is going to be appearing as well, thanks to the Marvel/Fox pissing contest over her. And a Quicksilver romance might also be in the air for her as long as they don't go the Ultimates route. It should make for a pretty exciting story.
Last bit of news is that it was announced by Disney CEO Bob Iger that the traditional end credits stinger at the end of Captain America: The Winter Soldier is going to lead directly into Avengers 2, leaving a year for the general movie-going audience to wait to see what happens. Hopefully it doesn't end up backfiring on them.