The Firefox 63 web browser promises to allow WebExtensions, the cross-browser system for developing extensions, to run in their own process on Linux-based platforms, as well as to improve the Windows 10 integration by making the Firefox theme match host's Dark or Light mode. Now that Mozilla promoted the Firefox 62 web browser to the stable channel for Linux, Windows, Mac, and Andriod users, it kicked off the development of the next major release, Firefox 63.
