I don't think that's definitive, tho. I'm sure the director wants it to be, but this is the MCU and a kind of spoiler. There's been a couple of these articles, from spoilers and then this. Comicbook dot com says it's definitive but the director doesn't actually. Between the writer's strike delaying things and the general MCU spoiler issues, I almost agree with a commenter I saw speculating that they haven't even decided yet and will see how fans react. I hope not but i'm.not quite ready to give up yet.