This is the first image of Z-NOCT-NIKKOR 58mm f/0.95 S lens.
Here is a rumored roadmap for the upcoming Nikon Z-mount mirrorless cameras and lenses in 2018 to 2019.
Along with Nikon Z6 & Nikon Z7 full frame mirrorless cameras, Nikon will also announce a new high-end prime lens: Z-NOCT-NIKKOR 58mm f/0.95 lens. This lens is the first NOCT lens from Nikon. The announcement date for this lens could be along with Nikon Z6 & Z7 on August 23rd or a later date. Currently, there is no price & specs info about this lens, stay tuned.