The film version of "A Princess of Mars", now called simply "John Carter" has its website up, although there is not much information. Nice background music, though.
The trailer is out today, attached to the Harry Potter film.
Now, as a fan of the stories since I was a boy, I am excited to see it. However, I am nervous as to how Disney have told the tale. The director seems a good choice and he has stuck close to the book.
I know someone who has worked on the film. They stated, without giving too much away, that he gives it a 7 out of 10.
(They are still in post-production, and reshooting some action sequences.)