In Drupal, they recently added this: Drupal core should inform the user of the security coverage for the site's installed minor version including final 8.x LTS releases
This is what this looks like:

From a site owner point of view, I find this very informative/useful. I don't have to be a "Drupal/Backdrop" person in order to know where to find information about this - it's right there on my site, and there's also a very handy link to the page that explains things in more detail if I need to know more.
Perhaps in our case we could merge that information with the "Backdrop CMS" entry. Here's what it could look like:
...or something more compact, like this:

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