We recommend that users keep up to date with the newest version of
Firefox for the latest features and fixes.
Noteworthy changes in this release:
- Improved performance for SDK extensions or extensions using the SDK
module loader
- Playback video on more sites without plugins with WebM EME Support for
Widevine on Windows and Mac
- Increased availability of WebGL to more than 98 percent of users on
Windows 7 and newer
- Changes for web developers
<https://developer.mozilla.org/Firefox/Releases/50#Changes_for_Web_developers>
The release notes for this release are available at: