Hi!
Ok, it's out since a few days now.
You can either install if you cvsup to the latest ports and then install usr/ports/x11/kde3. Then do a 'portupgrade -rR kde' and you'll be fine.
Or get all the packages from here. Just delete the old kde packages in var/db/pkg
and then do 'pkg_add kde-3.2.0.tar.bz' .
It's worth upgrading.
Bye.
PS: The packages are only for version 5.2 i think.