The Plasma 6 Megarelease is just 2 weeks away! Have you signed up for your local party yet 🥳?
KDE is organizing parties around the globe to celebrate the megarelease. Join us in the celebration with a party in your city or town!
https://community.kde.org/Promo/Events/Parties/KDE_6th_Megarelease
Your distro will package it and it will be like any other update.
I run Debian (cries in late updates)
Debian is stable and bug free. If you don’t want to have issues you should stick with it.
If you want something newer you can install Fedora in Virtual manager or replace Debian with Fedora.
Debian stable doesn’t ship our bugfix releases. It is not “stable” in the meaning that normal people use
Its stable in the sense that it is unchanging and reliable. That means by the time it ships there shouldn’t really be much in the way of bugs left. I personally can not stand bugs that’s why I usually avoid KDE in favor of Gnome. Debian has been the only distro as of yet to be free of bugs from my perspective.