Pre-ordered from Barnes & Noble and arrived yesterday (05/11).
I started reading it today and I am really delighted to finally! have this information presented in a very clear and easily readable fashion.
I use Adobe Lightroom and Photoshop (although Photoshop a lot less since Lightroom) and recently bought a new computer to use exclusively for this software.
This book will let me start off on a much sounder basis than I had with my prior computers used for photography.
I am finding some typos and areas where some clarification might be helpful ie. page 81 refers to Table 3-3 which does not appear until page 105 so a reference on page 81 to the table location would be helpful - I am sending these errata and 'suggested changes' to O'Reilly's site (I hope they are not confused by submissions as they still have the prior edition cover displayed on the errata submission page).

Thanks for the excellent reference.

Art Guertin