Mozilla has released Firefox 80 today, August 25th, 2020, to the Stable desktop channel for Windows, Mac, and Linux desktop users. It enables Mozilla’s new add-ons blocklist designed to enhance the browser’s performance and scalability by lowering the time needed to parse the list when automatically disabling problematic Firefox extensions. Firefox 80 also enables users to set it as their system’s default system PDF viewer and fixes several crashes that make the web browser more stable for screen reader users. Firefox 81.0 Beta, the next release that Mozilla will promote to the stable branch, also adds support for media playback via hardware media keys on a keyboard or headset or virtual media control interface.
Source: https://www.bleepingcomputer.com/news/software/firefox-80-released-with-new-and-faster-extensions-blocklist/