I wish to subscribe to a mailing list that will notify me of any security updates or patches released for IPFire. I have located this https://lists.ipfire.org/mailman/listinfo/ipfire-announce; however, it appears to have been inactive since 2020. Should you be able to provide me with a current link, I would be most grateful.
However, there is no dedicated list where we send out release announcements. Feel free to subscribe to the blog, that way, you get all blog posts sent to your mail. Every release (and testing release) is announced there.