The user-overrides.js preferences file for Firefox was updated. See the change-log in the GitLab repo for details.
Also wanted to pimp (again) a project that i've been keeping an eye on, Librefox. Librefox looks like a very interesting project that is focused on enhancing Firefox privacy and security and unlike Waterfox, Pale Moon, etc., Librefox is not technically a Firefox fork which means the project should keep up with security updates.
One of the goals of the project is to remove the "features" that are packaged with Firefox as well as eliminating it from phoning home. On the settings side, Librefox uses preferences from both the 'ghacks' user.js and the 'pyllyukko' user.js, the latter of which i am not familiar with.
It appears the project is progressing nicely and hopefully will replace Firefox for us privacy folks in the near future. In the mean time i'm letting it bake a little longer.