Interesting semi-official news about casting:
Mark Julian over at CBM caught a quick report by the AP that Paul Rudd was seen backstage at the Oscars with Chris Evans and Mark Ruffalo, who were also seen with Sam Jackson, RDJ and Jeremy Renner. AP speculated that he might be an "Avenger-in-training":
Paul Rudd could be one of "The Avengers." Yes, some people think so.
Rudd was hanging out backstage at the Oscars with the film's Chris Evans (Captain America) and Mark Ruffalo (The Hulk) when the Oscar show's talent coordinator, Danette Herman, spotted him.
"You look like one," Herman suggested.
Julian went on to say that Edgar Wright has previously mentioned Rudd as a potential Ant-Man. Put two and two together, and we might've found our Ant-Man last night at the Oscars.