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Firefox Nightly
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.

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Firefox Nightly is no longer supported on Windows 8.1 and below.

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Firefox Nightly is no longer supported on macOS 10.14 and below.

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94.0a1 Firefox Nightly

September 6, 2021

Version 94.0a1, first offered to Nightly channel users on September 6, 2021

Firefox Nightly gets updated every day and as a consequence, the release notes for the Nightly 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 on our @FirefoxNightly Twitter account as well as read our Nightly Blog.

New

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

    Bug 1725257

Get the most recent version

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Firefox Nightly is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox Nightly is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

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All Firefox Nightly downloads