Kind of? It does support higher refresh rates, but their emphasis on "Retina" resolutions imposes a soft limit because monitors that dense rarely support much more than 60hz, due to the sheer bandwidth requirements.
The MacBook Pro has had a 120 Hz screen for nearly half a decade. And of course, external displays can support whatever resolution/refresh rate, regardless of the OS driving them.
Kind of? It does support higher refresh rates, but their emphasis on "Retina" resolutions imposes a soft limit because monitors that dense rarely support much more than 60hz, due to the sheer bandwidth requirements.