64-bit (x64) architectures are the future, and already well on their way to becoming mainstream and burying 32-bit (x64). Microsoft was one of the first companies to recognize the trend and adapt products such as Windows XP, and then Windows Vista, Windows 7 and Office 2010 to the general trend in the evolution of processors. In fact, the software giant is already producing x64 exclusive software with Windows Server 2008 R2 and beyond, for example. Users currently running the 64-bit flavor of Windows 7 will soon be able to install a 64-bit version of Firefox offered officially by Mozilla.
In a platform meeting on May 25th, 2010, Mozilla indicated that it had been gearing up to produce the first x64 builds of Firefox tailored to Windows 7 by the end of this week. Mozilla’s Armen Zambrano Gasparian revealed that, “Once the builds start working (I almost have them) they will show up in” the Latest Trunk
download section. Early adopters will, of course, be able to download x64 Firefox releases and run them on 64-bit Windows 7.