Apple Inc.'s delayed update to the Mac OS X operating system is hitting store shelves as consumers are increasingly snapping up Macintosh computers to complement their iPods and iPhones.
Dubbed Leopard, the upgrade went on sale Friday at stores around the world. It offers improvements to an operating system that already was widely praised for its ease-of-use and slick interface.
Leopard boasts more than 300 new features, including one called "Boot Camp" that lets users install Windows on Macs, though both operating systems cannot run at the same time. "Time Machine," an automated data backup system, and "Spaces," a way to simultaneously view open applications, are among the other highlighted features.
Macs have reached record sale levels, and the launch of Leopard is expected to bolster a continuing rise.