Nor do we know if Stanton intends on adapting the first book, Princess of Mars, or if it will be some combination of many. As rumors have pegged John Carter as the franchise to eventually replace Narnia, I will venture a guess to say he's working on Princess. Plus it has a sexy title.
Now, I seem to be the only geek online who has not read Edgar Rice Burroughs' sci-fi extravaganza, so forgive my uneducated opinion -- but, from what I know of the series (thanks, Wikipedia), I genuinely hope it is live action. The world needs a glorious sci-fi opera, in all its pulpy glory, and it would be an interesting foray for Pixar. Plus, an animated John Carter just strikes me as a foray into the Uncanny Valley.
As Pixar and Stanton can do no wrong by me, I'm officially intrigued. I hope fans of the books chime in as to whether it ought to be live action or CG. And if your pick is live action, I'd love to know who you want to see as the dark-haired, gray-eyed immortal. I want to know who to picture when I (eventually) read the books.