In macOS 27.0, Apple introduced a new root-level directory called /pkg that is added to the system PATH via a file in /etc/paths.d. The directory contains subfolders like env, etc, inv, and var, but its purpose remains unclear, sparking speculation it may relate to a future first-party package management system. Despite changes to the boot volume structure including this directory since macOS 26.4, Apple has not provided official explanations for this addition.
