Dear Maintainer,

as I was upgrading a system from Debian 10 to Debian 11, I dutifully read
https://www.debian.org/releases/bullseye/amd64/release-notes/ch-upgrading.en.html

I ran into 4.2.7 (The security section) and 4.2.8 (The proposed-updates section). They contain relevant information that I was happy to receive. However, this information comes some time before the point that I am actually editing sources.list files.

My suggestion: put these two explanations early in 4.3 - either as extra sentences after "add sources for bullseye and typically to remove sources for buster." or as extra sections between what currently is 4.3 (Preparing APT source-list files) and 4.3.1 (Adding APT Internet sources).

Thank you.