m23 Rock 16.3 is now the latest stable build of the project, and comes six months after version 16.2, which added support for Ubuntu 16.04 LTS (Xenial Xerus) clients. It appears that there’s no support for newer GNU/Linux distributions in m23 Rock 16.3, but there are a bunch of interesting improvements and new features. For example, it is now possible to sign package sources when attempting to set up local package sources on the m23 server for installation of m23 clients using a fixed set of packages. Best of all, the new functionality also includes a GPG (GNU Privacy Guard) key management solution.