There sure have been a lot of these!
I'm doing my best to keep up with all the news on the upcoming CG animated Astro Boy movie by Imagi that has been coming out of Comic Con. There is really only so much that can be said at this point without sounding repetitive. Still, we get some new insight in this video interview from ReelzChannel with Kristen Bell, who talks about the ecological and social messages of the film.
I like the sound of this because it's very true to Tezuka's own viewpoints that he put in his stories without being blatant and hitting the audience over the head with them.
Also, MoviesOnline has a trio of interviews on the film. One with Freddie Highmore, one with Kristen Bell, and one with the two of them both together, (which is unfortunately mis-titled).