After a Douro Cruise I bought this book to supplement information gained on visits to Ferreira in Vila Nova Da Gaia & Sandeman's Quinta Da Seixo near Pinhão in the Douro. It was read withing 30 hours of receiving it - so it's an easy read and contains much very good information. However, while it appears that the preface has been thoroughly updated in this edition and also the tables of vintages in the appendix, there are some instances where the main body of the text is out of date, e.g. "The Douro is not navigable".....!
All in all a good value book which I could recommend to anyone wishing to learn more, fully updated it would be 5 Star.