We reported in October that Paul Rudd and Joseph Gordon-Levitt are in contention to play the title character, while Rashida Jones is rumored to be the front runner for Janet Van Dyne, a.k.a. The Wasp.
Here's what the filmmaker had to say about the casting rumors, while confirming that production begins in May.
"No, none of them are completely way off, but I don't know where they come from. I think sometimes, occasionally... I don't know where they come from. I think sometimes it's actually someone themselves starting the rumors because then... yeah. The rumor becomes kind of fact... I don't know. Some of them are way off. But the truth is we don't start filming until the end of May, so people on Twitter need to stop asking me, 'When are you going to announce casting?' Like they're angry! It's like, 'The film comes out in 2015. Chill out.'"