Porteus Kiosk 5.1 comes more than seven months after version 5.0 as a maintenance update that bumps the versions of the installed components to newer releases, and also introduces various improvements and new features. Still powered by the long-term supported Linux 5.4 LTS kernel series, Porteus Kiosk 5.1 is using Linux kernel 5.4.70 LTS, uses the portage snapshot 20201004, as well as the latest Mozilla Firefox 78.3.1 ESR open-source web browser, which is accompanied by the proprietary Google Chrome 85.0.4183.121 web browser.