Well I read a lot of Garth Nix myself, the Abhorsen books in particular. I'd love to see Sabriel animated, it would make an incredible anime.
Anyway, on topic, there's another
movie on the official site featuring an interview with Emily Rodda, in which she appears very excited and enthusiastic about the anime. Her comments about the characters are quite interesting, if you can strain to hear her over the translator. There's plenty of new footage of the characters and the CG in particular is much more convincing this time round. The monster designs remind me of some of Studio 4c's ones from Tweeny Witches...