Probably the biggest change in this latest HPLIP (HP Linux Imaging and Printing Driver) release is the fact that you can now install it on the recently released Ubuntu 20.04 (Focal Fossa) operating system series. Two other distributions are supported as well by HPLIP 3.20.5, namely Debian GNU/Linux 10.3 ???Buster??? and Manjaro Linux 19.0, but Debian GNU/Linux 10.4 and Manjaro Linux 20.0 are already out at the moment of writing and I have no idea if the printing driver supports these latest versions too.