Spent the evening upgrading from #debian #bookworm as the current stable to #trixie (which is still testing but is now well into freeze, so little will change for everyday use).
Checked the draft release notes and did the inline upgrade. Mostly okay.
Annoyances were from having to set up virtual environments again for #python apps. I tend to use #pipx and couldn't just do an upgrade, I had to refresh the #python runtime within each #pipx venv. Bit annoying, but not too onerous.
Main issue stems from a couple of apps that are not in the #debian repos.
#dvbcut hasn't been updated to be #trixie compliant, and that isn't available as #appimage or #flatpak, so that will be something I'll lose until I can sort out a docker or VM to run it if I truly need it still.
Other was trying to get #avidemux to compile and run - several fruitless hours later, and that isn't working either. For now I've gone with the flatpak but it's not official and I don't really like flatpaks if I can avoid them.