The Tor team launched version 7.0 of the Tor browser, which now includes the multi-process architecture of Firefox 52 "ESR", as well as a sandboxing mechanism for improved security (only available on macOS and Linux, for now).
Tor Browser 7.0 Launches With Firefox 52 ‘ESR’ Base, Multi-Process Architecture : Read more
Tor Browser 7.0 Launches With Firefox 52 ‘ESR’ Base, Multi-Process Architecture : Read more