I would be very surprised if in the next version of LR, softproofing wasn't supported. I believe it will be added to the Development module, where you can toggle it on and off, thus affecting the preview. With the preview in softproof mode, any other adjustments would be reflected in the softproofed preview. What you see is what you get, so to speak. As an added bonus, they could provide side by side viewing of the image with and without softproof, and maybe a click to make the softproof look as close to the non-softproofed image as possible. This is what I think will be in the next version of LR. You heard it here first. :-) AND ... and color printing problems will finally be fixed too, or else the softproof feature will be a waste.