See what landed recently in Firefox Nightly!

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.


Firefox Nightly

August 2, 2017

Version 57.0a1, first offered to Nightly channel users on August 2, 2017

Firefox Nightly gets a new version 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. Features listed here may or may not make a final release of Firefox.


  • Firefox Nightly has a new logo

    Bug 1387254
  • Add Report Site Issue option to Page Action menu for Firefox Nightly and Firefox Dev Edition

    Bug 1373650