We’re pleased to announce the third release candidate for Qubes 4.0.2!


  • All 4.0 dom0 updates to date
  • Fedora 30 TemplateVM
  • Debian 10 TemplateVM
  • Whonix 15 Gateway and Workstation TemplateVMs
  • Linux kernel 4.19 by default

Qubes 4.0.2-rc3 is available on the Downloads page.

What is a patch release?

A patch release does not designate a separate, new major or minor release 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 4.0.2.

What should I do?

If you installed Qubes 4.0 or 4.0.1 and have fully updated, then your system is already equivalent to a Qubes 4.0.2 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 4.0.2 ISO makes this more convenient and secure, since it bundles all Qubes 4.0 updates to date.

Note: At 4.5 GiB, the Qubes 4.0.2-rc3 ISO will not fit on a single-layer DVD (for the technical details underlying this, please see issue #5367). Instead, we recommend copying the ISO onto a sufficiently large USB drive. However, if you would prefer to use optical media, we suggest selecting a dual-layer DVD or Blu-ray disc.

Release candidate planning

If no major issues are discovered in 4.0.2-rc3, we expect the stable release of 4.0.2 to follow in a few weeks. As usual, you can help by reporting any bugs you encounter.