As an addendum: 4 packages were uninstalled.
# diff -uprN packages_before-transition-KDEPIM-and-KDE-Frameworks.txt packages_after-transition-KDEPIM-and-KDE-Frameworks.txt | egrep '^[+|-]ii' | grep -v wireless-regdb | egrep 'kdav|task-kde-desktop|kde-standard' -ii kde-standard 5:104 -ii libkpimkdav-data 19.08.3-1 -ii libkpimkdav5abi2:amd64 19.08.3-1 -ii task-kde-desktop 3.59 kde-standard and task-kde-desktop are meta-packages and guess will get a version-bump. As a sidenote: Qt packages from Debian/experimental with version 5.14.2 are not co-installable after installation of this transition. - Sedat -
