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 Developer Edition

August 5, 2016

Version 50.0a2, first offered to Firefox Developer Edition channel users on August 5, 2016

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


  • Improved printing by using the Reader Mode

  • New preference for allowing Ctrl+Tab to cycle through tabs in recently used order

  • Find in page now supports a mode to search for whole words only


  • Use accel-(opt/alt)-r as the reader mode keyboard shortcut

  • Emoji for everyone! Firefox will use built-in Emoji on operating systems without native Emoji fonts (Windows 8.0 and lower and Linux)