Upgrade went mostly without a problem (had set more than one Hostname for a service before, seems to not work anymore lol), and i have a pretty large configuration that has grown over the past two years.
What i noticed is that it is quite a bit faster. Also the dashboard shows a little more information than before and the logs have colours now.
Definitely worth using specific versions on your docker images if you’re doing automatic updates.
traefik:mimolette
for example should keep you on 2.x versions while still getting patches and bug fixes.