Bondware will have to write RTX support in... just like DAZ Studio is going to have to.

nVidia only supplies the API (though in the case of Blender and VRay, nVidia may have written in that support since both are open source projects, and it gives nVidia a halo product to show off to the world...) Adobe and the rest pitched in and did theirs already - now did they do it with nVidia's help/assistance? shrug - I dunno.