From the campaign:
Pirate World is a huge supplement for Dungeon World and Fate Core. It's bursting at the seams with crazy classes, mad inventions and monsters that'll eat you whole.
Back it now and you get 4 full and 3 preview Dungeon World playbooks instantly! They're ready; check out the first backer update to get them now. The three preview classes will be updated to full classes on Monday!The Fate Core classes are en-route, estimated late November. As backers, you'll be invited to the exclusive club that tests and improves Pirate World, and your ideas will help make it better.
The physical book will be awesome. A full colour, hardcover book printed and shipped to you. We can't wait! Pledge for £9 (about $15) to get the digital copy when it's released, or pledge for £25 (about $40/ €35.50 with postage) and get the physical copy mailed to you.