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

March 20, 2014

Version 29.0beta, first offered to Beta channel users on March 20, 2014


  • A set of new improvements to the Firefox user interface (learn more).

  • An interactive onboarding tour to guide users through new interface changes

  • A redesigned and improved customization mode

  • The ability to set up Firefox Sync by creating a Firefox account (learn more)

  • Gamepad API finalized and enabled

  • Malay [ma] locale added


  • Clicking on a W3C Web Notification will switch to the originating tab

  • navigator.plugins is no longer enumerable, for user privacy


  • 'box-sizing' (dropping the -moz- prefix) implemented (learn more)

  • Console object available in Web Workers (learn more)

  • Promises enabled by default (learn more)

  • Add-on bar has been removed, content moved to navigation bar

  • SharedWorker enabled by default

  • <input type="number"> implemented and enabled

  • <input type="color"> implemented and enabled

  • Enabled ECMAScript Internationalization API

Developer Information


  • Mac OS X: cmd-L no longer opens a new window when no window is available (1008793)

  • Exit is not always completed when "clear history when Firefox closes" is enabled (1005487)

  • Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1 has a workaround (see 812695)

  • Echo cancellation on fails (974537)