Uh, no, for all we know McCartney wants the role and the studio/casting directors aren't sure they want to pass up on someone that famous. There are just a lot of factors, here. And I'd say we'll have a cast list in . . . . oh, February or March. It doesn't mean that the people they are considering right now(Sokka and Zuko's potential actors. I'm pretty sure Katara and Aang's are confirmed.) are going to be what we end up with. I'm just saying, we can't judge anything until it's made. I'm sure the movie won't be as good as the show, it may even end up being absolutely horrible, but we won't know until 07/02/08.