Firefox 73.0 release information https://www.mozilla.org/en-US/firefox/73.0/releasenotes/
Has been released 13mb
Firefox 73.0 is the latest stable version of the web browser. The release date of the browser is February 11, 2020
all Firefox channels will be updated when a new Firefox Stable version gets released. This means that Firefox Beta and Dev will move to version 74.0, Firefox Nightly to 75.0, and Firefox ESR, the Extended Support Release, to version 68.5. For more info go here https://www.ghacks.net/2020/02/11/firefox-73-0-find-out-what-is-new-in-mozillas-latest-release/
Users with 0patch security software may encounter crashes at startup after updating to Firefox 73. This will be fixed in a future Firefox release. As a workaround, an exclusion for firefox.exe can be added within the 0patch settings.