libxml2's sole maintainer Nick Wellnhofer steps down, meaning libxml2 is now no longer maintained.
https://discourse.gnome.org/t/stepping-down-as-libxml2-maintainer/31398
It's hard to estimate just how many companies depend on this software and critical security updates to the library, so I'm certain many will quickly step up and offer sponsorship to ensure a fundamental dependency doesn't just deteriorate without proper support.
Any day now.