If you’re in the US, you’ve probably had little or no difficulty finding the book at the usual places – Amazon, Barnes & Noble, Powell’s – within hours of the official publication, or after a few days. If you’re in Canada, the delay was a little longer, but you can get the novel at chapters.indigo.ca or amazon.ca. If you’re in the UK, the book is now available at the Book Depository but, alas, not at amazon.co.uk.
Let me know if you’re having any difficulty sourcing the book. I’ve added a list of links to the sidebar.
ETA 25JUN2010: Now available at Amazon.co.uk.