“I’m quite pleased with the pace of new operating systems every 12 to 18 months for the foreseeable future,” he said. “We’ve put out major releases on the average of one a year, and it’s given us the ability to polish and polish and improve and improve.”
Poor Microsoft must really be upset at this news. Not only is Leopard vastly superior to Microsoft’s Vista at a much lower cost, but it doesn’t take Apple seven long years to upgrade its operating system as it has Microsoft to move from XP to Vista.
Source: "As Apple Gains PC Market Share, Jobs Talks of a Decade of Upgrades" by John Markoff, published in The New York Times.