https://www.windowslatest.com/2017/09/29/firefox-56-last-major-update-firefox-quantum-now-available-download/
Firefox 56 last major update before Firefox Quantum now available for download
Sep 29, 2017 - Mozilla has released its last major update for its Firefox Browser, Firefox 56 which would be the last release before the company moves to Firefox Quantum...
firefox 56major updatenow availablelast