A long awaited next generation web browser Firefox 4.0 Release Candidate is available for Download.
Firefox 4.0 moved out of beta and Mozilla Foundation released RC for users. Firefox 4.0 beta users will be upgraded automatically to RC and then RC users will be automatically upgraded to final release of Firefox 4.0.
According to Mozilla, they have tested Firefox 4.0 RC on a Dell Optiplex 760 (Intel Core2 Duo), Windows 7 Professional and found above results (shown on above picture).
Firefox 4.0 RC can be downloaded from here.