Adobe doesn't update the camera Raw setting except for the newest versions. Too much of a bother and as an incentive to make you update to the latest and greatest CS version.
If you go to adobe's web site and look for Adobe DNG Converter and download, and install it. It will convert from NEF to DNG supposedly Photoshop's native format.
Adobe makes fun of Nikon's File format as non standard. Yet Nikon has been using this format for RAW files since RAW files have existed on Nikon.
Apple provides Camera Raw updates for OSX on a Regular basis every few weeks. And they read all Camera Raw formats be it from Nikon, Sony, Cannon, Pentax, Fuji, Samsung, Panasonic, HP, etc you name it.
I chalk it up to laziness, not too talented code writers, or just to contrariness.