Firefox Beta and Developer Edition
Release Notes

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

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

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

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

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

Searching for something already in your bookmarks or open tabs? We added super smart icons to let you know

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

Windows 7 systems without Platform Update can now use D3D11 WARP

The media parser has been redeveloped using the Rust programming language

Improved step debugging on last line of functions

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

Au revoir to Windows Remote Access Service modem Autodial

So long to support for 10.6, 10.7 and 10.8. Now we can focus on where most Mac users are: 10.9. Don't forget to upgrade!

After version 48, SSE2 CPU extensions are going to be required on Windows

Workers can now use the Web Crypto API

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

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

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

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

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

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

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"

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

WebExtensions support is now considered as stable

On some websites using an important number of cookies, under certain conditions, this can cause the user to be logged out (1264192)