DirectX or Metal support / MAC / Parallels

As apparently Apple will not support OpenGL anymore (support will end with Catalina), is there any plans by McNeel to switch from OpenGl to DirectX / Metal?
In our studio we’re running Rhino for windows on five Macs with Parallels v.14. Without OpenGL we would then need to buy a PCs for the whole crew…

just to be sure its not a misunderstanding, Metal will be only supported my Mac Os. other than that metal is not going to come soon as @stevebaer pointed out here but it is at least targeted and preparations are being done.