We're making a lot of quality updates to the book, this revision of Maven: The Definitive Guide updates the introduction and adds some content to the POM chapter. Have fun reading, and let us know if you have any feedback - book@sonatype.com
It is amazing the number of typos I find everytime I give this book a proofreading, this particular revision addresses some of the remaining typos (and there are many more left!) I did a quick proof/edit of the settings appendix and I addressed some issues in the POM chapter. Revision 0.8 Here