Hi,
it seems that Sparkfun has recently updated its collection. There is a new 3.3V 8Mhz board available (http://www.sparkfun.com/products/11114) that replaces the old one (http://www.sparkfun.com/products/9220). The description might allow the conclusion that the bootloader has been changed since no reference is given anymore to the Duemilanove w/ 328.