Just a few days after the release of Firefox 4.0, Mozilla opened the open source code for the unreleased version.
Everyone has heard of this rumor all the time, saying that Firefox's successor was not 4.0. Now this rumor has been confirmed. Mozilla will provide a temporary iteration version 4. x. Now this x is obviously replaced by 2. You can download the latest 4.0 open-source browser in the pre-release version on the Firefox Nightly Builds page.
Now,The first version of Firefox 4.2Alpha can be downloaded.. However, users are told that this version is used for testing, not for final products. End users should still use 4.0Final. It is not a wise choice to enter the immature 4.2 beta version too early. Of course, in the transition between 4.0 and 4.2, 4.0.x should also appear for stability and security considerations.
: Http://nightly.mozilla.org/
Legnitto, the author of Firefox, said that he had considered using other names such as Anteater and Macaw to replace Firefox 4.x. From the current situation, it seems that after the official release of 4.0.x and 4.2, Mozilla will enter the development process of Firefox 5.0.
Firefox 5.0 is estimated to be released 16 weeks after the first release date of Firefox 4.0. As of the deadline, Firefox 4.0 has reached 18 million downloads.