The latest KDE Frameworks release -- this month is 5.27 -- is available in the unofficial KDE-FreeBSD ports repository, area51. Users of the plasma5/ branch in that repository can update as usual. or from the bleeding-edge packages provided by the KDE-FreeBSD team.

The state of those ports with respect to the official ports tree is unchanged: we're working on getting the infrastructure updates needed to subsequently push KDE Frameworks into official ports (just Frameworks, initially, not Plasma or newer applications) and that's a long-ish process.