According to the initial estimates from Mozilla, Firefox 4.0
should hit the Beta 1 milestone ahead of the end of June 2010. With less than 10 days to go until the deadline, the browser maker will certainly need to ensure that the development process goes as smooth as possible if early adopters are to get the first Beta milestone of Firefox 4.0. However, at the end of the past week, Mozilla was waiting for two bugs impacting the Beta to be resolved ahead of code freezing the release. One of the blockers is related to the new graphical user interface built for Firefox 4.0.