The AP has the details.
I'm scratching my head a little bit about the casting. On the one hand, Carrie Underwood is a good singer, which is essential for the role of Maria.
On the other hand...An Austrian? ("Let's start at the very beginning, y'all.")
I've previously written about my love of the film, and have personally met a few of the stars (Read here and here), so I am a bit biased against doing it at all. But Carrie Underwood? Who will be playing Liesl? Taylor Swift?
I'll probably check it out, but I've got a very bad feeling about this. I'll have my autographed copy of the film soundtrack nearby, just in case.