9to5Linux
The Mozilla Firefox 83 web browser is now available for download on Linux, macOS, and Windows systems ahead of its official launch tomorrow, November 17th, 2020.
The biggest new change in the Mozilla Firefox 83 release appears to be a new security feature called HTTPS-Only Mode, which is implemented in Preferences, under the Privacy & Security section. It provides a secure and encrypted connection between your web browser and the websites you visit, even if they don’t use HTTPS.
By default it’s disabled, but when enabled, the HTTPS-Only Mode will upgrade all your website connections to use Secure HTTP (HTTPS). The good news is that it can be used in all windows or only on private windows.