At least in the UK. It will take a few weeks for US warehouses to receive stock, and we have still not received our own copies, but at least the book is out there (somewhere). Amazon is discounting the book which puts it into a more affordable price range.
It will be very strange the first time I spot it 'in the wild' by chance. If I spot someone reading it on a bus/train/plane, I wonder whether I will be tempted to say anything.