plans to release released Firefox 87.0 Stable and Firefox 78.9 ESR to the public on March 23, 2021. The new versions of Firefox are available as automatic updates but also as direct downloads from Mozilla's main website and third-party sites as well.
All development versions of Firefox are released around the same time. Firefox Beta and Firefox Developer are updated to Firefox 88, Firefox Nightly is updated to version 89, and Firefox for Android will also be updated to version 87.0 eventually (the release was delayed somewhat recently).
Check out our Firefox 86.0 release overview in case you missed it.
Firefox 87.0 and Firefox ESR 78.9 are available via the browser's automatic update feature after the official release later on March 23, 2021. You can verify the installed version by selecting Menu > Help > About Firefox; this will also run a check for updates.
Manual downloads are also available. The following pages list direct downloads for supported Firefox channels.
Less website breakage
Firefox users who use the browser's private browsing mode or have set Enhanced Tracking Protection to Strict, benefit from a new feature that Mozilla calls SmartBlock.
SmartBlock is designed to reduce breakage on websites by using stand-in scripts on sites so that these load properly. These scripts are included with Firefox and simulate the "real" script enough to make the website believe that it is loaded. No tracking code is loaded or included in these scripts.
Mozilla published a blog post with information on the new feature.
HTTP Referrer is trimmed
Starting in Firefox 87, the browser will trim the HTTP Referrer for all cross-origin requests, e.g. when a site loads a third-party resource such as an image or a stylesheet.
Instead of revealing the full path of the webpage the user is on, only the domain name will be revealed.
Check out our coverage of the feature here: Firefox 87 to limit the referrer for all cross-origin requests
Firefox for Android
Coming once it is released.
Security updates are revealed after the official release of the web browser. You find the information published here after release.
Firefox 88.0 will be released on March 23, 2021 according to the Firefox release schedule.
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