Update: the Nikon Distortion Control Data firmware version 2 can be downloaded here.
Nikon released new firmware updates for the D90, D7000, D7100, D600, D610 and D4s DSLR cameras. Follow the links for additional details:
- Nikon D90 Firmware Update A 1.00, B 1.01: Nikon EU
- Nikon D7000 Firmware Update A 1.04, B 1.05: Nikon EU
- Nikon D7100 Firmware Update C 1.02: Nikon EU
- Nikon D600 Firmware Update C 1.02: Nikon EU
- Nikon D610 Firmware Update C 1.01: Nikon EU
- Nikon D4s Firmware Update C 1.10: Nikon EU
Not all firmware updates are listed on Nikon USA support site at the time of this post.