In Bionic virtual machine installed .23 from proposed, did
---> ua detach --assume-yes apt update apt upgrade apt install hello update-manager <---
and confirmed that update-manager just says "The software on this computer is up to date. However, Ubuntu 20.04.6 LTS is now available (you have 18.04)."
In Bionic virtual machine installed .23 from proposed, did
--->
ua detach --assume-yes
apt update
apt upgrade
apt install hello
update-manager
<---
and confirmed that update-manager just says "The software on this computer is up to date. However, Ubuntu 20.04.6 LTS is now available (you have 18.04)."