Gary, It's hard to say if Capture NX2 will work. The latest versison is CNX2 2.3.4 and it was posted on 08/31/12 and updated on 09/07/12. Nikon could have included D600 support in this version and not included it in the software update notes - didn't want to tip their hand on the D600 which was announced on 09/13/12. I recommend that you install the latest version. If Nikon was proactive, the support is there. Find it here: http://support.nikonusa.com/app/answers/detail/a_id/17948
BTW, this applies to the latest version of ViewNX2. There latest version for Mac is 2.5.0 and that was also updated on 09/07/12.
Good luck and enjoy your D600. Let us know what yoout think.
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