With the release yesterday of Frameworks 5.68.0, the usual full monthly update of all of KDE has moved to all users, this include bug fix releases of plasma 5.18 and KDE Apps 19.12.3. No major changes or issues were announced.
A big update is still in the [build] repo and rebuilds are ongoing for this, a new GCC 9.3.0, GLIBC 2.31 & Binutils 2.34 based toolchain.
All compilers (like clang and rust) have been (re)build on this toolchain, also done is the Glib2 stack (updated to 2.64.1), which includes about 60 packages.
Expect the new toolchain to reach all users by the end of this week.