/pub/suse/ <arch> /supplementary/ KDE/update_for_10.1
ftp.suse.com and first mirrors now carry the "KDE supplementary" package repository for SUSE Linux 10.1.
"supplementary" is one of the unsupported playgrounds of SUSE packagers for providing newer application versions like KDE 3.5.2 with KOffice 1.5.1 for past distribution releases. See this wiki page for a list of other YaST repositories, most of them provided by the openSUSE community, and read this fine tutorial how to add them.