Article Summary:

Nikon has released firmware version 2.0 for its D200, D2X and D2Hs digital SLRs.  New for the D200 is support for the WT-3 wireless transmitter and image authentication (optional), while the D2X and D2Hs each get over a dozen new enhancements.  DPReview has a full list of changes.

Unfortunately, it’s not straightforward to find download pages for the new firmware updates, but Nikon Imaging Download is probably the best place to start.