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.

79.0beta Firefox Beta

June 30, 2020

Version 79.0beta, first offered to Beta channel users on June 30, 2020

Changed

  • macOS versions 10.9, 10.10 and 10.11 are no longer supported by Firefox. Users of these macOS versions are recommended to switch to Firefox ESR 78.x in order to continue receiving security updates.

Developer

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