Download Firefox 5.0 alpha 2 – First Aurora build
Windows 32-bit (Installer)
Windows 32-bit (Portable)
After releasing final version of Firefox 4.0, Mozilla has started working on Firefox 5.0 and 6.0 version and has released the first preview build of 5.0 alpha 2.
Shortly thereafter, Firefox’s new channel system will be implemented. Firefox 5a2 will be introduced as the first Aurora build.