The final version of Firefox 4 is officially releasing tomorrow, however it is now available for download at the Mozilla FTP server for all supported operating systems and languages.
![Mozilla Firefox 4 Final Mozilla Firefox 4 Final](https://i0.wp.com/lh5.googleusercontent.com/-1bXsKGRA_sI/TYckUu4fmRI/AAAAAAAALuw/j1FRyslOYsg/s1600/firefox-4-final.jpg?resize=500%2C269&ssl=1)
Update: Firefox 4 has been officially released now.
Download: Mozilla Firefox 63 Beta 9 (Windows-x64)