Nikon today announced what looks like a pretty unique lens. It's a 105mm prime lens with a fast f/1.4 aperture, which Nikon describes as a "Worlds First"
From the Press Release:
The AF-S NIKKOR 105mm f/1.4E ED is a fast, full-frame (FX-format), medium-telephoto prime lens and is the world’s first1 to strike the impeccable balance of 105mm focal length and large f/1.4 aperture for a truly outstanding optic. This new NIKKOR lens is ideal for professional and advanced enthusiast photographers, especially those capturing portraiture, from in-studio fashion to a golden hour engagement session on the beach. These users will love the precise sharpness from this fantastic glass, which provides a flattering compression to subjects with a sensational, sultry bokeh. Beyond the gorgeous image quality lies stellar resolving power, especially when used with Nikon DSLRs such as D5, D810 or D750.