I last passed the CCNA in 2007. Since I never got the chance to re-certify that or pass a CCNP exam, it's now expired. Has the exam changed much since 2007? All of the prep materials I've seen usually have a published date of sometime in 2007 or 2008, so I want to be sure I'm finding the latest edition.
For example, I usually get Todd Lammle's guides and the latest I've found for the CCNA Exam Certification Guide is the 6th edition, from September 2007.