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Firefox Beta and Developer Edition
Release Notes

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

126.0beta Firefox Beta

April 16, 2024

Version 126.0beta, first offered to Beta channel users on April 16, 2024

Firefox Beta gets updated 3 times a week and as a consequence, the release notes for the Beta channel are updated continuously to reflect features that have reached sufficient maturity to benefit from community feedback and bug reports.

Warning: Features listed here may or may not make a final release of Firefox.

In addition to these release notes, you can follow ongoing development via our @FirefoxBeta Twitter account.


  • A simpler and more unified dialog for clearing user data is now available.
    In addition to streamlining data categories, the new dialog also provides insights into the site data size corresponding to the selected time range.

  • Enabled AV1 hardware decode acceleration on macOS for M3 Macs.


  • For consistency with Firefox desktop and, Firefox for Android's "add-ons" settings have been renamed to "Extensions".

  • Added "Linux" to Firefox for Android's User-Agent string to fix some website compatibility issues.


Web Platform

  • Copy Link Without Site Tracking has added the ability to remove parameters from nested URLs and expanded support for blocking over 300 tracking parameters from copied links, including those from major shopping websites. Keep those trackers away when sharing links!

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All Firefox Beta downloads