Commemorative stamp yearbooks are still available at
usps.com for 2003, 2004, 2005, 2006 and 2007.
These have not been very consistent in what they contain with regards to panes vs. single stamps. The USPS does not want to make them too expensive for gift-giving, and so what exactly is included varies with the number of new issues each year and is driven by the desire to hit their retail price point ($49.95, more recently $64.95).