I am new to Rocky Linux and am using it in industrial automation server applications. The latest version of minicom on Rocky 9 is 2.7. In 2.8 options for using minicom with RS-485 was added - would we be able to see this version (or later) added to Rocky 9?
Rocky 9 has package minicom-2.7.1-17-el9, because that is what RHEL 9 has.
The style for Enterprise Linux is to take a version and then backport fixes to it, rather than rebase. See What is backporting and how does it affect Red Hat Enterprise Linux? - Red Hat Customer Portal
It is Red Hat, who does decide when to rebase and what to backport.
Anyway, the minicom in Rocky 9 is therefore not quite the “2.7” of upstream (minicom developers).
Put other way, Rocky 9 may – or most likely not – get in future package with that feature.
The minicom seems to be just four simple programs: ascii-xfr, minicom, runscript, xminicom.
You can probably fetch the source code of the project and compile them as regular user.
Then install to $HOME/.local or /usr/local
That is not as convenient as managed packages since it will be up to you to re-fetch and re-install, whenever the source gets important fixes.
You could make a package request to EPEL to see if someone would be willing to build it and add it to EPEL repository. Other alternatives, are for you visiting Fedora Source RPM’s page and downloading the minicom source and use mock to build it. This will then provide you with an rpm you can install yourself. Fedora Source RPM for minicom: Making sure you're not a bot!
There are some posts on this forum already on how to use mock, or probably tutorials also easy to find with google.