Snow Leopard was publicly unveiled on Jat the Apple Worldwide Developers Conference.On August 28, 2009, it was released worldwide, and was made available for purchase from Apple's website and its retail stores at. Mac OS X Snow Leopard (version 10.6) is the seventh major release of Mac OS X (now named macOS), Apple's desktop and server operating system for Macintosh computers.
Mac OS X 10.6 Snow Leopard was billed as primarily under-the-hood changes to OS X 10.5 Leopard, but it was much more significant than that.
