The Kindle version has been available for several weeks and now the paperback version is available for purchase at InformIT.  The paperback version can also be pre-ordered from these online book stores:

• Amazon
• Barnes & Noble
• Borders
• InformIT (paperback or eBook)
• Safari Books Online

If you do pick up a copy please write a review on one (or all) of the above sites and pass along a comment to your friends and colleagues.