I am pleased to say that my book will be released next month and can now be pre-ordered. You can read more about the book and order it here.
As you can see from the flyer below, you can get a 30% discount from the list price of $34.95 if you order from the publisher and use the promotional code so that the cost becomes $24.47. Oxford University Press will start shipping out copies starting November 20, other retailers in the US on December 18, and in the UK on January 1, 2020. I have no information as yet about the rest of the world but I assume it should be around the same time as the UK.