Anyone ever read it? I read it quite awhile ago and then again recently. It is quite extensive and shoots down George's claims that it's always been Anakin/Vader's story which I agree and never believed anyway. It was Luke's story. It only changed when GL rewrote ESB and fused Vader and Father Skywalker together. Even thjough this is not really what the book is really about it just lays out the genesis and changes it all went through and how it all came about. Pretty good history book.
Anyway they lay out everything of how it all came together and where the PT came from, etc. You can buy it from Amazon which is expensive or I have the PDF if anyone is interested.