Mozilla released Firefox 80.0 to the Stable channel and Firefox ESR 78.2 / Firefox ESR 68.12 to the Extended Support Release channel on August 25, 2020.
Note: if you are reading this on August 25, 2020, the new Firefox releases may not be available yet.
All other Firefox channels are updated to new versions as well. Firefox Beta and Developer versions are updated to version 81, Firefox Nightly is pushed to version 82, and the new Firefox for Android is updated to version 80 as well.
Check out the Firefox 79 release notes in case you missed them.
Rollout of Firefox 80 and Firefox ESR 68.12 / Firefox ESR 78.2 begins on August 25, 2020. Automatic updates will pick up the new version and install it automatically on devices the feature has not been disabled on.
Firefox users may select Menu > Help > About Firefox to display the installed version of the browser and to run a check for updates manually.
The following pages list direct downloads for supported Firefox channels (will be available later on August 25, 2020)
New Add-ons Blocklist
Firefox 80 is the first version of the browser that includes the new add-ons blocklist. Mozilla maintains a list of problematic browser extensions, e.g. malicious or privacy-invading ones, that blocks included add-ons from being run in Firefox.
Core benefits of the new blocklist are that it reduces the time it takes to load and parse the blocklist significantly.
The new blocklist mechanic is also introduced in Firefox ESR 78.x, one of the few instances that an ESR version gets a feature update with a minor update.
You can check out documentation on Mozilla's add-ons blocking process here.
Release notes offer little information, most bits taken from Firefox 80 beta release notes
Security updates are revealed after the official release of the web browser. You find the information published here after release.
Additional information / sources
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