Not only is this book the first one available for Final Cut Pro version 10.4, it is based on the most recent release of v10.4.2.
It covers all the new features in this software upgrade like Captions, 360° Video, and the Color Inspector plus the many changes in the 10.4 update like Color Balance and Roles Export.
The book is available as pdf file and printed book on Amazon. The interactive multi-touch iBook will be available on Apple's iBooks Store beginning of July.
All the links are available at http://DingDingMusic.com
If you purchased the pdf version of the previous book "Final Cut Pro 10.3 - How it Works", then you are eligible for a free update and should have received a separate email with a download link to get the pdf version of this book for free.