I will not say much to avoid spreading rumors but what I came to know last night from Texstar on PCLinuxOS forums is that PCLinuxOS will be getting KDE4 packages as Tex said:
"KDE4 will be available before the end of June for PCLinuxOS."
How will this update be applied and what changes will be made to current stable PCLinuxOS before and after this update is still awaited.
Hope it will be a good change.