This is with 9-15 Preview on windows:

This is with 9-15 Preview on windows:

OK. I have no idea what happened. Restarted the application it is there now!

This is a feature that probably has not been announced properly until now. When you load a color (RGB or RGBA) volume then it is rendered using the color stored in each voxel. Since no scalar->color mapping is performed, the “Scalar Color Mapping” section is not displayed.