Marco I've got it from Amazon about a month ago, so it should be available now save for some eventual country restrictions.
Stephen :( I have no idea why it isn't available for me... I go to the link provided or try and search but just get "This title is not currently available for purchase" instead of the usual one click.
Donna Clapp I can confirm the Kindle edition is available--I've purchased it and can see it on my Kindle. :-)