Adobe Engineer Eric Chan has released version 3 of his Beta camera profiles for selected Nikon bodies, download here.
These updated Camera v3 beta profiles for the Nikon D3, Nikon D300, and Nikon D700 are designed to reduce banding and highlight color artifacts. They also address the "too bright" tone curve issues with the previous "v2" version of the D3 and D700 profiles.
IMPORTANT NOTE: When using these v3 beta profiles, if you wish to match the default tonality of Nikon's Picture Controls (e.g., match View NX / Capture NX), you must set the Exposure slider in Camera Raw / Lightroom to -0.5.
Of course, feel free to adjust Exposure to make your image brighter or darker as you like. But in terms of matching Nikon's default tonality, you must set the Exposure slider to -0.5, or the default will be too bright.
For workflow convenience, you can use presets in Camera Raw / Lightroom to take care of both (e.g., simultaneously set the profile to "Camera Standard" and set Exposure to -0.5).