I also read about it, and it seems like a worrying development for MacOS users who work in the field of 3D.

My main 3D editors are MoI, Blender 3D and ZBrush. They would all have to completely rewrite parts to specifically work with Apple Metal. Ton Roosendaal, the main man behind Blender has already stated that this won't happen for Blender, because it has to retain its cross-platform compatibility. They will keep supporting OpenCL and OpenGL in Blender for Mac, but that will become a dying horse. That sucks.