This is Pratchett's latest, the third of his stories about Tiffany Aching. It's a bit more mature than the first too, although obviously still aimed at teenage readers.
It's also a good story, with lots of fun bits. At first the various doings of the witches seemed a bit uninspired, covering the same ground he's been over before. However, the story soon kicks off and any feelings of sameness I had were left behind.