https://techcrunch.com/2018/09/24/macos-mojave-is-now-available/

Enjoy reading lots of words about new operating systems? Good news! There are plenty of those here. Enjoy actually downloading and running said new operating systems? Gooder news! macOS 10.14 Mojave is now available in final public form over at the Mac App Store.

As with the last several versions of the desktop OS, Mojave’s a free download — though every time the company launches a new one, there tends to be a bit of a bottleneck with downloads, so you may want to give this one a bit of time before attempting.