Firefox 52.0 released: find out what is new for more info go here http://www.ghacks.net/2017/03/07/firefox-52-0-released-find-out-what-is-new/#comments
Mozilla Firefox 52.0 is available on Mozilla's public FTP server. The update will be made available today through the browser's automatic update feature, and also on the Mozilla website.
You can run manual check for updates in the following way in Firefox:
- Open Firefox if it is not open already.
- Tap on the Alt-key on your computer keyboard, and select Help > About Firefox.
This displays the current version and channel of the browser. An update check is performed in the background, and new versions that are found during the check are either downloaded and installed automatically, or on user request.