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.


Firefox Beta

September 20, 2016

Version 50.0beta, first offered to Beta channel users on September 20, 2016

For more information about Developer Edition please see this MDN article.


  • Added Guarani (gn) locale

  • Added option to Find in page that allows users to limit search to whole words only

  • Updates to keyboard shortcuts

    • Set a preference to have Ctrl+Tab cycle through tabs in recently used order
    • View a page in Reader Mode by using Ctrl+Alt+R (command+alt+r on Mac)
  • New preference for allowing Ctrl+Tab to cycle through tabs in recently used order

  • Improved printing by using the Reader Mode

  • Lock icon strikethrough for pages containing insecure password fields


  • Fixed rendering of dashed and dotted borders with rounded corners (border-radius)


  • Added a built-in Emoji set for operating systems without native Emoji fonts (Windows 8.0 and lower and Linux)