"The KNOPPIX 5.0 Live DVD contains some major changes in the unionfs-based file system, new hardware detection and autoconfiguration, and a more 'genuine Debian' oriented selection of packages. Apart from this, the harddisk install option ('knoppix-installer') has been extended by Martin Öhler, based on the work of Fabian Franz, featuring a 'live update' of specific packages from a new version of the live DVD or CD.
"The first release of Knoppix 5.0 is exclusively available as a free pressed DVD on CeBIT..."