Amazon estimated shipping arrival date is quite accurate. After my book is shipped, it listed on the site that it will arrived on the 18th December 2007 and it really did, in fact it came early in the morning at about 10am. Here are some pictures:
In fact, I have already browse/read through the entire book and I find it quite useful especially the WordPress MU part as I am not familiar with it. I always wonder what is the difference between /wp-content/mu-plugins/ and /wp-content/plugins/ when I extracted the zip, but after reading the book, I got my answer.
Kudos to Lisa for a job well done on the book (now I know you visit my site) =D