Studio Ghibli has released a second trailer for Gedo Senki, a.k.a. Tales from Earthsea. You may have to right-click that link and download a copy to disk before you can view it. The first trailer is also available, from the Online Ghibli website. Both trailers are mostly images with music, with only a few spoken phrases (in Japanese).
Quasi-spoilers for trailers follow:
This trailer reinforces my previous thought about the movie: it may well turn out to be a great Studio Ghibli movie, but it sure isn't going to look anything like my mental image of the Earthsea books (or at least not of the characters from the books). It looks like anime, as you would expect from Ghibli.
I still don't quite get why most of the Le Guin fans I've seen comment on it seem excited about this movie. I keep hearing comments that I interpret as indicating that people expect this version to be much truer to the books than the Sci Fi Channel's version was, but I'm pretty dubious about the likelihood of that happening. Le Guin has posted a detailed synopsis of the new movie; I didn't read it in detail, 'cause it appears to contain major spoilers for the whole movie (as you'd expect from a synopsis), but at first glance it looks like a sequel to the original trilogy rather than a film version of those books. But perhaps it's just that people are expecting something that's truer to the spirit of Le Guin's books, rather than truer to the plot? Or maybe people are just reacting to the fact that Le Guin hasn't spoken out against it--she says she's going to keep quiet about it until she sees the actual movie.
Note, btw, that all the characters appear to be white (or at least have Standard Anime Pale Skin) in this version too.