Firefox 57, scheduled for release next week, will add a new option to allows users to turn on the browser’s Tracking Protection feature all the time, not just in Private Browsing mode. The feature is a feature that Mozilla added to Firefox Desktop and Firefox Android in the summer of 2015. Mozilla has already implemented two privacy enhancing features from the Tor Browser, such as the ability to block websites that try to fingerprint users using fonts. The move comes as the Mozilla Foundation tries to reposition itself as a privacy-first organization, similar to the Tor Project.
Source: https://www.bleepingcomputer.com/news/software/firefox-57-to-feature-option-for-always-on-tracking-protection/