The Nikkor Z 50mm f/1.4 follows the Nikkor Z 35mm f/1.4 announced in late June, which set in motion what is now clearly a series of f/1.4 primes for Z-mount cameras. Like the recent 35mm f/1.4, the new 50mm f/1.4 combines a compact form factor, fast f/1.4 aperture, and an approachable price point.
Source: Nikon Debuts Cheaper and Faster Nikkor Z 50mm f/1.4 Prime Lens | PetaPixel