I have asked for functional kontact and kmail wit plasma 5 in KaOS, they answered me, that in openSUSE mix old KDE 4 with Plasma 5, you have kdepim 4.1x.x on those, just like in KaOS stable. KaOS is FULLY moving to plasma 5, anything depending on old, 4.1x.x kde-runtime, kdepimlibs, kde-workspace, etc is not going to make the move to KaOS kf5. It is true?
I don’t know what KaOS is doing. Why are you asking that in the openSUSE forums anyway?
But, there is no KF5 based release of Kontact/KDEPIM yet.
The underlying libraries (kdepimlibs e.g.) are in the process of being ported to KF5, but they haven’t been released yet either.
This will still take months.