Stanton says he's "deep into" work on a revised new draft of the script, and that casting discussions are taking place.
"I'm on my next draft of it. We're in pre-production art-wise, and we're starting to talk to actors. So it's full bore".
"Well, it's not being done by the Pixar crew. It's being done by Disney, and I'm sort of being loaned out.
...We're not being purist with Pixar, but Pixar's a brand that you have to trust that's for all ages. This story of John Carter is not going to be an all-ages film," he says, implying strongly that he and co-writer Mark Andrews are aiming for a PG-13 rating.