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.

Firefox Nightly

November 13, 2017

Version 59.0a1, first offered to Nightly channel users on November 13, 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.

In addition to these release notes, you can follow ongoing development on our @FirefoxNightly Twitter account as well as read our Nightly Blog.


  • Added new settings in about:preferences that allow you to stop intrusive websites from asking you to receive notifications or access advanced device features such as camera and geolocation, while still allowing websites you trust to use these features.

    Bug 1368744
  • The Screenshot tool allows copying an image to the clipboard

    Bug 1419148
  • Locale added: Interlingua (ia)

    Bug 1427688



  • The "about:" page was removed. Use the "About Firefox" dialog instead.

    Bug 1408044
  • about:healthreport (Firefox Health Report) has been removed in favor of about:telemetry

    Bug 1352497
All Firefox Nightly downloads