The second release candidate release of KDE 4.5 was released last week and again thanks to neoclust we have packages for Mandriva 2010 Spring since the beginning of this week. Packages for both i586 and x86_64 are available now. Here are the upgrade instructions:

First, Add the KDE 4.5 RC2 repository, for 32 bit systems use the following urpmi command (as root):

urpmi.addmedia kde-4.5rc2 ftp://ftp.kde.org/pub/kde/unstable/4.4.92/Mandriva/2010.1/i586/

You can use another mirror if you want. For 64 bits systems use the following urpmi command (as root):

urpmi.addmedia kde-4.5rc2 ftp://ftp.kde.org/pub/kde/unstable/4.4.92/Mandriva/2010.1/x86_64/

Then update the repositories and download all the packages before actually installing them to make sure that the installation is possible (as root):
urpmi --auto-update --auto-select --test

When all packages finish downloading and you see a message at the end saying that the installation is possible, you can now run the same command without the –test parameter to perform the installation (as root):

urpmi --auto-update --auto-select

After the packages installation finishes, logout and log back in, That’s it.