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Qubes OS 4.0.4-rc2 has been released. Qubes OS is a free and open-source, security-oriented operating system for single-user desktop computing. Qubes OS leverages Xen-based virtualization to allow for the creation and management of isolated compartments called qubes.

Qubes OS 4.0.4-rc2 has been released!

e’re pleased to announce the second release candidate for Qubes OS 4.0.4.

Qubes OS 4.0.4-rc2 includes many updates over the initial 4.0 release, in particular:

  • All 4.0 dom0 updates to date
  • Fedora 32 TemplateVM
  • Debian 10 TemplateVM
  • Whonix 15 Gateway and Workstation TemplateVMs
  • Linux kernel 5.4 by default
  • Bug fixes from 4.0.4-rc1

Qubes 4.0.4-rc2 is available on the  downloads page.

What is a point release?

A point release does not designate a separate, new version of Qubes OS. Rather, it designates its respective major or minor release (in this case, 4.0) inclusive of all updates up to a certain point. Installing Qubes 4.0 and fully updating it results in the same system as installing Qubes 4.0.4.

What should I do?

If you installed Qubes 4.0, 4.0.1, 4.0.2, or 4.0.3 and have  fully updated, then your system is already equivalent to a Qubes 4.0.4 installation. No further action is required.

Regardless of your current OS, if you wish to install (or reinstall) Qubes 4.0 for any reason, then the 4.0.4 ISO makes this more convenient and secure, since it bundles all Qubes 4.0 updates to date. Please see the  installation guide for detailed instructions.

If you’re willing to  test this release candidate, you can help to improve the stable release by  reporting any bugs you encounter.

Qubes OS 4.0.4-rc2 has been released!