This is how you do it on Fedora 11
if you want new kde packages, then as root:
nano /etc/yum.repos.d/kde.repo
copy & paste the following:
Code:
# kde.repo, v2.1
[kde]
name=kde
mirrorlist=http://apt.kde-redhat.org/apt/kde-redhat/fedora/mirrors-stable
gpgkey=http://apt.kde-redhat.org/apt/kde-redhat/kde-redhat.RPM-GPG-KEY
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-kde-redhat
enabled=1
[kde-testing]
name=kde-testing
mirrorlist=http://apt.kde-redhat.org/apt/kde-redhat/fedora/mirrors-testing
gpgkey=http://apt.kde-redhat.org/apt/kde-redhat/kde-redhat.RPM-GPG-KEY
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-kde-redhat
enabled=1
[kde-unstable]
name=kde-unstable
mirrorlist=http://apt.kde-redhat.org/apt/kde-redhat/fedora/mirrors-unstable
gpgkey=http://apt.kde-redhat.org/apt/kde-redhat/kde-redhat.RPM-GPG-KEY
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-kde-redhat
enabled=0
then type in yum update and watch it updating to the latest and greatest

Note that you can enable/disable repos by writing in 0 or 1. I updated to KDE 4.3.0 RCs weeks ago - at that time they were in kde-unstable. AFAIK KDE 4.3.0 now resides in KDE testing, so its better to leave kde-unstable disabled (unless you want to end up with alpha quality kde 4.4 stuff in the near future).
And of course you
don't need to upgrade to rawhide! This works on Fedora 11