The Nikon AF DC-NIKKOR 105mm f/2D lens is listed as “Discontinued by manufacturer” at Amazon.com:
The lens is still not listed as discontinued on the official Nikon website and is still available in stock in all major US retailers (B&H, Adorama). Nikon USA is “Temporarily out of inventory“.
Update: Nikon UK confirmed that the AF DC-NIKKOR 105mm f/2D lens is no longer in production (thanks Harv):
