It's mostly a 2.6.22.x Iso with some fixes to last Linuxtag Isos.
Changelog to last Duke-Linuxtag2007 installation ISO:
- kernel 188.8.131.52 usage
- fixed: update mkinitcpio for new .22 firewire layout
- fixed: update hwdetect for new rtc_sys and firewire stuff
- Memory requirements bumped to 128MB!
- Serial console support in install environment
- USB Keyboard issues fixed
- fixed: "" around CONSOLEFONT and CONSOLEMAP
- fixed: dhcp rc.conf entry
- fixed: not generated glibc locales