Firefox Release Notes

Sidebars button in browser chrome enables faster access to social, bookmark, & history sidebars

Mac OS X command-E sets find term to selected text

Insecure NTLM (pre-NTLMv2) authentication disabled (see 828183)

Various security fixes

Ignore autocomplete="off" when offering to save passwords via the password manager (see 956906)

TypedArrays don't support new named properties (see 695438)

Disallow calling WebIDL constructors as functions on the web

With the exception of those bundled inside an extension or ones that are whitelisted, plugins will no longer be activated by default (see blog post)

Support for GStreamer 1.0 (see 806917 for build configuration)

Fixes to box-shadow and other visual overflow (see bug 480888)

Mute and volume available per window when using WebAudio

background-blend-mode enabled by default

Use of line-height allowed for <input type="reset|button|submit">

ES6 array and generator comprehensions implemented (read docs for more details)

Error stack now contains column number

Support for alpha option in canvas context options (feature description)

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

Errors loading scripts inside eval scripts with Developer Tools open (998908)

Without affecting security, after restoring your session, Extended Validation Certificates might not display (See 995801)

Slow shut downs lead to 'Firefox is already running' warning (see 966469 and 985655)

Mac OS X and Windows: Citrix Receiver no longer works. As a workaround, mark the plugin as Always Enable in the addon manager (1025627)