Nikon has today issued firmware version 2.0 for three of its digital SLRs. The D200 gets support for the WT-3 wireless transmitter and image authentication via the menu (the use of which requires optional software). Updates to the D2X and D2Hs are far more extensive (probably the largest list of updates we've ever seen implemented by firmware) and include additional ISO settings on the D2X, auto-focus improvements, changes to menu options, new image processing options and playback information.

Phil: Note that new firmware should be downloaded from your regional support site and isn't yet available on all language sites (although is expected to be available everywhere by the end of the day). Major Kudos to Nikon for delivering such a wide range of new features to existing customers by firmware.

Nikon D200 firmware version 2.0

• Support for the wireless transmitter WT-3 has been added.
• An Image authentication option has been added to the cameras setup menu. For full functionality the optional Nikon Image Authentication Software is required to authenticate images.
  

Nikon D2X firmware version 2.0

• H 0.3 (equivalent to ISO 1000) and H 0.7 (equivalent to ISO 1250) if using  EV steps of 1/3rd steps in the Custom setting b2 or H 0.5 (equivalent to ISO 1100) if using  EV steps of ½ steps in the Custom setting b2, have been added between the ISO 800 and H 1 settings in the ISO menu.
  
• Autofocus subject acquisition and tracking performance has been improved.
• A Black-and-white (sRGB) option has been added to the Color mode option in the shooting menu.
• A new Trim function has been added to the shooting menu.
• Up to 3 custom tone curves can now be downloaded to the camera for use with the Custom Tone compensation option.
  Nikon Capture 4 (Ver. 4.4.2) Camera Control or Camera Control Pro with Ver. 1.1.1 and later is required to download 3 custom tone curves to the camera.
• An Image authentication option has been added to the setup menu.
  The optional Image Authentication Software is required to authenticate images.
• A Save/load settings item has been added to the setup menu.
• The Mirror lock-up option in the setup menu has been modified to function with battery power as well as AC-adapter power.
• The Lock-On option in the CSM menu now offers 4 options: Long, Normal (default), Short, and Off.
• Max. sensitivity and Min. shutter speed options have been added to the ISO auto menu.
• The Maximum shots option in the CSM menu has been updated to support a maximum setting of 60 shots.
• The FUNC. button item in the CSM menu has been divided into 2 separate items labelled FUNC. button and FUNC. + command.
• A Recent settings item has been added to the setup menu.
• The shooting data of an image in the playback photo-information display now includes. Focus mode (S/C/M) and Vibration reduction* (on/off)
  *Displayed only when the image was captured with a VR lens.
• Latitude and longitude GPS data now displays up to 3 digits* for each segment.
  *3-digit display may not be possible with some GPS devices.
• A compass bearing is displayed in the GPS data, if used with a GPS device is equipped with digital compass.

Nikon D2Hs firmware version 2.0

• Autofocus subject acquisition and tracking performance has been improved.
• Up to 3 custom tone curves can now be downloaded to the camera for use with the Custom Tone compensation option.
  Nikon Capture 4 (Ver. 4.4.2) Camera Control or Camera Control Pro with Ver. 1.1.1 and later is required to download 3 custom tone curves to the camera.
• An Image authentication option has been added to the setup menu.
  The optional Image Authentication Software is required to authenticate images.
• A Save/load settings item has been added to the setup menu.
• The Mirror lock-up option in the setup menu has been modified to function with battery power as well as AC-adapter power.
• The Lock-On option in the CSM menu now offers 4 options: Long, Normal (default), Short, and Off.
• Max. sensitivity and Min. shutter speed options have been added to the ISO auto menu.
• The Maximum shots option in the CSM menu has been updated to support a maximum setting of 60 shots.
• A Recent settings item has been added to the setup menu.
• The shooting data of an image in the playback photo-information display now includes. Focus mode (S/C/M) and Vibration reduction* (on/off)
  *Displayed only when the image was captured with a VR lens.
• Latitude and longitude GPS data now displays up to 3 digits* for each segment.
  *3-digit display may not be possible with some GPS devices.
• A compass bearing is displayed in the GPS data, if used with a GPS device is equipped with digital compass.