"Amaral sold the copyright of the book to the publishers in March 2008, at which time he was still a serving officer. I do not understand how the SC court could keep referencing the final report which had not even been written at that time." http://miscarriageofjustice.co/index.php?topic=8030.msg391932#msg391932
So if the copyright is sold one would imagine the text of the book has already been written and shared, therefore the defamation and damages start from then rather than the date the book gets published.
2 The significant date will be when the book entered the public domain ie the publishing date.
The two relevant dates are:
The date when PJ case documents entered the publice domain.
The date when Sr Amaral's book entered the public domain.
Public domain = the state of belonging or being available to the public as a whole, especially through not being subject to copyright or other legal restrictions. ie if you ask for it you may have it subject to any rules surrounding that such as you may have pay for it or wait until someone has copied it.