Or, more accurately, it has a page for the book. Freedom of Religion and the Secular State is currently showing as "out of stock", but that will just be because copies haven't physically arrrived yet (publication is mid-January).
As I've said often, Embiggen Books is a wonderful bookshop - formerly based on the Sunshine Coast, but now in Melbourne. It stocks an extensive range of material related to reason and science. If you're here in Australia and looking for books as Christmas pressies (or looking for books for any other reason), check out its website. Ordering from Embiggen Books might be a good idea for you. You'll find some great possibilities, and you'll be supporting a business that stands strongly for a rational, science-based view of the world.