Firefox 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 Release

November 1, 2016

Version 47.0.2, first offered to Release channel users on November 1, 2016

We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!


  • Detect SSE hardware version (Bug 1271761)

  • Detect Websense to protect users from a startup crash (Bug 1305787)

All Firefox downloads