Coming soon.. nikkor 14mm f/2.8 ED
Nikon will be releasing a new 14mm ultra wide angle lens soon. the specs? not much yet, althought we do know this:
Lens construction: 14 elements in 12 groups
Closest focusing: 0.2m/0.66 ft.
Built-in gelatine filter holder: Provided at rear of lens
It will function as a 21mm, converted to 135 format, on the D1.