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.

48.0beta

Firefox Beta

June 8, 2016

Version 48.0beta, first offered to Beta channel users on June 8, 2016

New

  • Roar for moar protection against harmful downloads! We've got your back

  • Process separation (e10s) is enabled for some of you. Like it? Let us know and we'll roll it out to more.

  • Add-ons that have not been verified and signed by Mozilla will not load

  • Windows folks: Tab (move buttons) and Shift+F10 (pop-up menus) now behave as they should in Firefox customization mode

  • WebRTC embetterments:

    • Delay-agnostic AEC enabled
    • Full duplex for GNU/Linux enabled
    • ICE Restart & Update is supported
    • Cloning of MediaStream and MediaStreamTrack is now supported
  • Searching for something already in your bookmarks or open tabs? We added super smart icons to let you know

  • GNU/Linux fans: Get better Canvas performance with speedy Skia support. Try saying that three times fast

Fixed

  • Heyo, Jabra & Logitech C920 webcam users. We fixed those pesky WebRTC bugs causing frequency distortions. Buh-bye, squeaky voice!

  • Improved step debugging on last line of functions

Changed

Developer

  • We're putting the spotlight on the background. Now you can debug WebExtensions background content scripts and background pages

  • Content Security Policy (CSP) is now enforced for WebExtensions. (Who's down with CSP?)

  • Add-on development just got easier because you can reload them from about:debugging — because we're all about debugging.

  • This theme is hot, hot, hot! Say hi to the Firebug theme for Developer Tools.

  • Want to move absolute & fixed positioned elements? (Who doesn't, right?) Now you can with our geometry editor.

  • The memory tool now has a tree map view for your debugging pleasure. It's a little bit of "boo" and a whole lot of "ya."

  • Old and busted: Error Console. New hotness: Browser Console for your debugging pleasure.

  • Expand network requests from the console panel to view request details in line, so you can see things in context

  • Workers can now use the Web Crypto API

Developer Information