Mozilla works on uplifting privacy settings of the Tor browser project to the Firefox web browser to provide privacy conscious users with additional privacy-related options.
While the Tor browser is based on Firefox ESR, it is modified with additional privacy and security settings to protect users of the browser while using the program.
Considering that Tor browser is used by some in critical situations, whistleblowing, publishing news or communication, it is only natural that a stronger focus on privacy and security is necessary.
Mozilla acknowledges these modifications, and plans to integrate some of them in Firefox natively. In fact, the company has already begun to integrate some in Firefox, and plans to integrate others in the future.