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.

94.0beta Firefox Beta

October 5, 2021

Version 94.0beta, first offered to Beta channel users on October 5, 2021

New

  • Firefox macOS now uses Apple's low power mode for fullscreen video on Youtube and Twitch. This meaningfully extends battery life in long viewing sessions.

  • Firefox now offers a new page about:unloads where users can manually unload tabs without closing them to release the system resource.

Developer

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