Mozilla sent Firefox Version 51.0 to the release channel today. The update includes five (5) Critical, six (6) High, ten (10) Moderate and three (3) Low updates. No additional changes are indicated in the release notes.
Firefox ESR was updated to version 45.7.0.
The next scheduled release is March 7, 2017 (5 week cycle with release for critical fixes as needed).
Mozilla Firefox Release Notes (https://www.mozilla.org/en-US/firefox/51.0/releasenotes/)
Security vulnerabilities fixed in Firefox 51 (https://www.mozilla.org/en-US/security/advisories/mfsa2017-01/)
Update of FF ESR to v45.7.0 broke my Adobe Flash 18 extended release version. Had to copy the NPSWF32_18_0_0_382.dll in the Program Files/Mozilla Firefox/plugins folder on Win 7 32-bit system. On Windows 10 64-bit system, FF ESR update did not break my flash 18 version.
Firefox Version 51.0.1 Released. From the Release Notes (https://www.mozilla.org/en-US/firefox/51.0.1/releasenotes/)
- Geolocation not working on Windows (Bug 1333516)
- Multiprocess incompatibility did not correctly register with some add-ons (Bug 1333423)