Firefox Version 43.0 ( December 15, 2015 ) https://www.mozilla.org/en-US/firefox/43.0/releasenotes/
What’s New
- New
Private Browsing with Tracking Protection offers choice of blocking additional trackers
- New
Firefox 64-bit for Windows is now available via the Firefox download page
- New
Improved API support for m4v video playback
- New
Users can choose search suggestions from the Awesome Bar
- New
On-screen keyboard displayed on selecting input field on devices running Windows 8 or greater
- New
Firefox Health Report has switched to use the same data collection mechanism as telemetry
- Fixed
Various security fixes
- Fixed
Eyedropper tool does not work as expected when page is zoomed
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Available via the internal updater: HELP / About Firefox