As you might expect, there’s another point release available for the LTS version of Ubuntu. Although this update doesn’t include much in the way of new features, it does offer plenty of bug fixes, security patches, app updates, and kernel 5.15.
If you’re already using Ubuntu 20.04, you can get the .5 release by way of the built-in upgrade system, which means there’s no need to do a fresh install.
One thing to keep in mind is that 20.04 is not the latest LTS release for Canonical’s flagship operating system. That title would belong to 22.04. However, since there are still a large number of users still working with 20.04 (and since it is still supported until April 2025), Canonical continues to push upgrades.
That being said, the .5 upgrade does not install the latest-greatest software to 20.04. For example, LibreOffice upgrades to version 6.4.7.1, GNOME is at 3.36.8, and Firefox is at version 104. To get more updated versions of such software titles, you’ll need to either run a distribution upgrade (to migrate from 20.04 to 22.04) or install those packages manually.
If you’d rather do a fresh install of Ubuntu 20.04.5, you can get the ISO image from the official download site[1] and read the full changelog[2] for the new release.