Mozilla released the next major version of their browser, Firefox 20. The update brings in more security features into the browser and also allows users to open private browsing window without closing the current window. Also, the update brings in an easier way for users to manage their download right inside the browser itself. The update is now available to Windows, Mac, and Linux. This version of the browser is also available for Android devices. Update now! Download the browser (Windows, Mac, Linux) here. For those who have Android devices, the app should have updated itself already, provided that you have set it to update automatically. If not, head over to the Play Store.