recently I upgraded my Ubuntu to 21.04 using dev channel:
sudo do-release-upgrade -d
(it was because I was curious of 21.04 and couldn't use -c flag because of this)
where:
-d, --devel-release
If using the latest supported release, upgrade to the development release
Now I wonder, am I using dev version of Ubuntu from now on? I would like to eventually use stable version of 21.04. How do I do that?