Version 4.1.0 of the secure-desktop-oriented Qubes OS distribution has been
released. “The
culmination of years of development, this release brings a host of new
features, major improvements, and numerous bug fixes“. New features
an experimental GUI domain separate from dom0, the “Qrexec” policy system,
progress toward a reproducible build, and more. See below and this article for more information.

Source: LWN.net – Qubes OS 4.1.0 released