Photoshop CC now has Soft Proofing!
It’s actually Camera Raw in Photoshop CC – Camera Raw 8.1, that now allows you to soft proof images.
Now in Camera Raw 8.1 you can select an ICC profile (RGB or CMYK). How do you find it?
In Camera Raw 8.1 click the Workflow Options link (the link at the bottom of the Camera Raw window. When Workflow Options dialogue box opens, choose a space in the Color Space section. That’s it!