Apple/macOS silently removed from official Unix registry

Apple's macOS has been silently removed from The Open Group's official UNIX Certified Products registry, meaning it no longer holds formal UNIX certification status. The registry previously listed macOS among officially certified UNIX systems, but it is no longer included, though The Open Group has not made a public announcement about the delisting. The removal suggests macOS no longer meets The Open Group's strict compliance requirements for the Single UNIX Specification certification.