On PHPClasses.org there's a new post reviewing a book from Packt Publishing, "PHP 5 CMS Framework Development" (a second edition) by Martin Brampton.

In this review I focus on the changes between the editions of the book, which are brief and objective, since the core of the work remains the same and with the same quality. [...] In sum, I recommend reading this book to those looking forward to improve their skills in PHP, or intend to create new frameworks. To put it simply, a good book to read, and with new tricks to learn.

He (the reviewer, Alexandre Altair de Melo) briefly looks at these differences between the versions, with the largest being in Chapter 15 - the building of a sample application to apply all of the theory learned in the rest of the book. You can find more information about the book on Packt's website here.