Firefox Release Notes

Significant new customization mode makes it easy to personalize your Web experience to access the features you use the most (learn more)

A new, easy to access menu sits in the right hand corner of Firefox and includes popular browser controls

Sleek new tabs provide an overall smoother look and fade into the background when not active

An interactive onboarding tour to guide users through the new Firefox changes

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

Gamepad API finalized and enabled

HTTPS used for Yahoo Searches performed in en-US locale

Malay [ma] locale added

Various security fixes

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

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

Console object available in Web Workers (learn more)

Promises enabled by default (learn more)

SharedWorker enabled by default

<input type="number"> implemented and enabled

<input type="color"> implemented and enabled

Enabled ECMAScript Internationalization API

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

Implemented URLSearchParams from the URL specification (see MDN for details )

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

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

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)

Local (file://) links don't work (995943)

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