I thought it was for kids, so I didn't pick it up.
I've read plenty of Pratchetts (go figure! <img src="/ubbthreads/images/graemlins/delight.gif" alt="" /> ), and believe me, his "kids" books are just titles that kids are also likely to enjoy. He doesn't write down; the depths are still there for anyone wishing to take the plunge; the humour is just as delightful.
Just finished reading
The Amazing Maurice and his Educated Rodents, which is described as "the first for young readers set in the Discworld universe" Almost right. It's for
all readers. Just like the rest of his stuff.