Apple on Wednesday issued the final version of its latest upgrade for OS X, known as 10.11 El Capitan. The new version, named after another precipice in Yosemite National Park, builds upon the foundation laid down by Yosemite in much the same way Snow Leopard was a polishing of the transitional technologies found in Leopard, or Mountain Lion was a refinement of the numerous changes seen in Lion. The upgrade is free for all qualified machines.
