Let's sum this up in case someone has a similar viewpoint in the future:
1) use "Cauldron" for newest KDE packages!
2) join the Mageia QA test team!
BTW, maybe you may be happy to hear that "Mageia" is back on #4 on Distrowatch!

P.S.: In case someone is searching for KDE updates and what changed, here is the bug tracker, here is the official release announcement website.
Thank you for participating in this discussion,
All the best to you