Another one in the new upgrade streak:

dnf system-upgrade download --releasever=35

Nothing major, although transaction error:

Problem: problem with installed package perl-Crypt-PWSafe3-1.22-17.fc34.noarch

Was met with quick sledgehammer:

rpm -e --nodeps perl-Crypt-PWSafe3

Post-upgrade, I had an app or two that required the following command-line option, as suggested by https://githubmate.com/repo/flavioislima/HeroicGamesLauncher/issues/666:

--disable-gpu-sandbox