Nikon have released new lens distortion control data for the D7000 and numerous other DSLRs.
The data is loaded to the D7000 via an update to the L firmware, and provides corrections for lens barrel and pincushion distortions.
The update takes the L firmware to 1.006. So if you have anything older, you should update this straight away. Check via; SETUP – Firmware version – L
Only Nikkor lenses are of course covered by this lens distortion control data.
The complete list of supported lenses and the download link can be found at nikonimglib.com.