The document discusses several interface boards that can be used to connect electronics components and expand the functionality of the Raspberry Pi. These include the Pi Cobbler, Pi Plate, and Humble Pi for prototyping, as well as expansion boards like the Pi Face, Slice of PI/O, Gertboard, and RaspiRobotBoard. It also mentions upcoming books about the Raspberry Pi, including a book by Simon Monk scheduled for late November/early December 2012.