Wez Furlong has posted the slides from his PDO talk at the Zend/PHP Conference on his blog today. They can be found here (PDF).

As a side note, Wez also mentions (again) the move from PDO_XXX style constants to PDO::XXX in the development process - for namespace support later on. The change hasn't been made to the PECL packages, but it has to the 5.1 branch, like PHP 5.1RC3...