Here is the latest updated Nikon Z-mount lens roadmap for Nikon Z-mount full frame mirrorless cameras. According to latest leaks,There will be 13 more new Z-mount mirrorless lenses by 2021. You can see the details below:
Nikon has officially announced the new NIKKOR Z 24-70mm f/2.8 S Lens. The Z 24-70mm F2.8 S has been on Nikon’s Z-series roadmap since the mount was announced last August, and is being pitched by Nikon as a perfect fast standard lens for the Z6 and Z7, offering a faster maximum aperture and more robust build quality than the more compact Z 24-70mm F4 S. The US price for NIKKOR Z 24-70mm f/2.8 S lens is $2,296.95, you can check pre-order options at B&H Photo/Adorama/Amazon. Release date is in Spring of 2019.