See what’s new in Firefox!

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.

4.0

Firefox for iOS Release

May 10, 2016

Version 4.0, first offered to Release channel users on May 10, 2016

New

  • Sync on exit

  • Today widget to Open Tab (currently supported on iOS 9 only)

  • Overwrite certificate errors

  • Support printing in Firefox for iOS

  • Include bookmarks in Awesomebar results and domain autocompletion

  • Implement Telemetry Core Ping

  • Songhay (locale code: ses) added