ウェブStarting with Mac OS X 10.2 Jaguar, big-cat names were used as marketing names; starting with OS X 10.9 Mavericks, names of locations in California were used as marketing names instead. The current major version, macOS 14 Sonoma, was announced on June 5, 2023 at WWDC 2023 and released on September 26 of that year.