Yes, but a lot of the topics discussed are still key concepts. The fundamentals of SEO haven't really changed, just the means of achieving optimization has. On Page SEO is still extremely important along with the creation of quality content, and quality links. Even though the book is dated, you can still learn a lot from it.
The industry is also constantly changing, which is why, in my second response, I recommended to subscribe to some of the prominent SEO Blogs' RSS Feeds.