Mozilla finally ships 64-bit Firefox for Windows

Mozilla today shipped Firefox 43, the first edition that lets users download a production-grade 64-bit version for Windows.While Mozilla did not cite the 64-bit support with any fanfare, it was the biggest difference between Firefox 43 and its predecessors.A preview of the 64-bit Firefox for Windows was issued more than nine months ago, when Mozilla's usual schedule would have meant a May release.The biggest advantage of a 64-bit browser on a 64-bit operating system -- like Windows and Apple's O