debian-cd is the package that we use to create ?CDs and ?DVDs of debian. There is a mailing list for discussion.
debian-cd version 2.2.22 shipped in sarge. For quite a while before that, we were trying not to make major changes while we were creating daily and weekly sets of ?CDs and ?DVDs for testing. Now sarge is gone, we have a lot of changes to make - see DebianCdToDo