Another update yesterday. I've corrected many small mistakes throughout the book. I've worked on the description of the EM algorithm and added a couple of figures. I've also done a lot of work on the shape chapter - I'm about half way through, but it's more coherent & correct now.
If you are planning on reading the book, then please please please try to find the time to mail me some comments. They are proving so useful to me and the quality is really increasing I think.