The next version of macOS is expected to be announced at Apple's Worldwide Developer Conference this June. In fact 9to5Mac has found references to macOS 10.14 in their analytics, suggesting internal testing is underway. If Apple sticks to the current format, it should be nicknamed after a place or region in California. What will the next macOS be called? 10.9 Mavericks 10.10 Yosemite 10.11 El Capitan 10.12 Sierra 10.13 High Sierra 10.14 ??