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Converting Ubuntu To A Rolling Release Using Rolling Rhino · The Kernal
thekernal.xyzUbuntu is a point release distro, meaning that it has multiple releases that you update between. However, there are many people who would instead prefer to have a rolling release distro, where there is one release that gets continually updated. While some people would move to another distro, like Debian Sid, or even Arch Linux, there is a way that you can turn Ubuntu Linux into a rolling release distro. The method that I am going to show you today, it a lot faster than doing it manually, and it entails downloading a shell script which will automatically change you to the ‘devel’ release.
As someone wrote in 2017 at Ubuntu Bug #1728616: using ‘devel’ in sources.list causes apt-get update to fail [via]:
Looking at the issues for “rolling-rhino” it looks like that is still the situation today.