The first Mac software was called System 1 and it was released on January 24, 1984, and there have been 30 major updates since. Apple rebranded to Mac OS with the release of mac OS 8 on July 26, 1997.

CUPERTINO, Calif.—If you’re buying one of the new iPhones or the other hardware that Apple announced today, your new devices will ship with Apple’s latest operating system updates already installed.