Nikon released firmware updates for the following cameras: D90, D7000, D7100, D600, D610 and D4S.

Here is the link for downloading the updates:

• 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