The audiobook is now up and ready for download. Audible gave me 50 promo codes, 25 for the US/Canada and 25 for the UK. Unfortunately, if you live outside of these regions, the promo codes will not work.
If you are interested in a free review copy of the audiobook, I have a few promo codes left in the US and quite a lot still for the UK. I’m now opening up this to anyone who wants a promo code. I can’t guarantee everyone will get one if I run out.