Beta for the latest KDE Applications was released today:
It is mostly build already for KaOS (and uploading right now).
A few more are now no longer git builds, but are included in the tar releases for kf5 apps. This includes ktp-call-ui & kmahjongg among others.
Not build yet is the entire kdepim group (that includes all the libs like kdepimlibs & about 22 new libs packages plus kdepim-rutime). This group includes about 50 packages now, and upstream has changed everything how they are build.
Expect this group to become available over the next several days.
Language packs will not be compiled at this time, expect thos to be added for the RC.