replying to some thread from last week: yes its true this just in, from <http://www.debian.org/doc/manuals/quick-reference/ch-system.en.html#s-codenames>
Other codenames that have been already used are: buzz for release 1.1, rex for release 1.2, bo for releases 1.3.x, hamm for release 2.0, and slink for release 2.1. CraigW
