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 complete list of changes in this release.

49.0beta

Firefox Beta

August 3, 2016

Version 49.0beta, first offered to Beta channel users on August 3, 2016

New

  • Reader Mode can now read articles out loud

  • Improve overall performance on OS X systems without hardware acceleration

  • Improve video performance on systems without hardware acceleration that support SSSE3 instruction set

  • Graphite2 font shaping is enabled by default

  • Improved appearance of anti-aliased OS X fonts

  • Firefox Hello being decommissioned

  • Saved HTTP logins will now be offered on HTTPS pages

  • HTML5 audio and video improvements

    • Files can now be looped through the built-in controls in the context menu
    • Play audio and video at 1.25× speed through the context menu
  • Adjust the width and line spacing of Reader Mode text

  • OS X users who did not originally install Firefox can now update it if they can provide administrator credentials

Changed

Developer

Developer Information

HTML5

  • Support multiple SVG mask elements as mask images