Main article: Firefox early version history Rapid releases Firefox 92 is the latest version, which was released on September 7, 2021. This was gradually accelerated further in late 2019, so that new major releases occur on four-week cycles starting in 2020. Starting with version 5.0, a rapid release cycle was put into effect, resulting in a new major version release every six weeks. Firefox was created by Dave Hyatt and Blake Ross as an experimental branch of the Mozilla browser, first released as Firefox 1.0 on November 9, 2004.
