Apple always gives unique names to their desktop operating systems. What will be the possible name, was able to learn from the documents that were filed by the company during the registration of trademarks for possible names.
Application for obtaining trademark rights was filed by Apple in Cambodia and the Philippines. Just reserved four possible name:
Remarkably, one of the names was registered in Cambodia, and the Philippines. This “Mojave”. Most likely, it will be the name of the new desktop operating system from Apple. However, in Cupertino have a few names in reserve: “Rincon”, “Grizzly”, “Farallon” and “Monterey”. These names can also be chosen for macOS 10.14.
Over the past few years, Apple used the names related to mountain range of the Sierra Nevada, USA. Most of them are places of California. They are used by the company since the release of OS X Mavericks in 2013.