The Waterfox browser is an application of Alex Kontos developer and hopefully it arrived at the 56.2.0 version at 16 May 2018. The new version of browser greatly based on Firefox code and includes security updates, performance improvements, and some other changes.
The new version of the Waterfox browser is available through the browser's self-updating system, as well as downloaded to the official site and is of course free and open source. It only supports English in the first place, but you can add the Greek language of Firefox without any problems.
Waterfox 56.2.0 includes the latest Mozilla security releases for the Firefox web browser. Includes updates listed on MFSA 2018-10 and MFSA 2018-11. You can see him Mozilla Security Advice Website for information about individual patches.
The new version of Waterfox includes a large number of changes. Users who have set the privacy.resistFingerprinting option to "true" will notice that Waterfox disguises itself as Firefox 60, and if it is set to "false" then it looks like Firefox 56.
Also those users who have noticed high CPU usage in Waterfox should see improvement. Alex Kontos (obviously of Greek descent) notes that the issue of "high CPU usage" is a thing of the past.
Waterfox 56.2.0 also includes Stylo but is disabled by default. Kontos plans to add to Firefox the Firefox 57 WebExtensions API and integrate the classic add-on directory to about: addons