Looks like Terry Pratchett's next book has been announced, this one titled The Wee Free Men, due out in May of this year. As with the past few books, this one takes the discworld into a new direction with a new set of characters (although we have met the Pictsies previously). From the description:
"Another world is colliding with this one," said the toad. "All the monsters are coming back."
"Why?" said Tiffany.
"There's no one to stop them.
There was silence for a moment.
Then Tiffany said, "There's me."
If you haven't read Pratchett before you're really missing out on some funny stuff. Our Goth friends in particular should get an enormous hoot out of: