Nikon officially released the previously leaked Nikkor Z lens roadmap with an update on the Nikkor Z 14-24mm f/2.8 S lens (pictured above):
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Nikon will continue to lead imaging culture by providing products that stimulate the creative imaginations of customers around the world, with a wide variety of high-quality lenses. The NIKKOR Z 14-24mm f/2.8 S is scheduled to be released before the end of the year, and will join the NIKKOR Z 24-70mm f/2.8 S and NIKKOR Z 70-200mm f/2.8 VR S in covering wide-angle, standard, and telephoto ranges, expanding the possibilities of imaging expression for high amateur and professional photographers alike.
Here is the updated Nikkor Z lens roadmap (click for larger view):