According to trusted source from NR, next new lenses from Nikon will be new super telephoto zoom lens Nikkor 200-500mm lens and AF-S NIKKOR 24-70mm f/2.8 VR lens. Both lenses will be coming soon.
Nikon 200-500mm super telephoto zoom full frame lens:
There is no info about aperture of this lens, in the past Nikon has filed several lens patents on this lens: Nikon 200-500mm f/3.5-5.6 VR lens and f/4-5.6 lens. There is also a small chance for a fixed aperture. By the way, Canon is also rumored to announced a super telephoto lens soon.
Nikon AF-S NIKKOR 24-70mm f/2.8 VR lens:
This lens is almost confirmed, with VR feature, it will be announced soon, as Canon also rumored to announce their IS version 24-70mm f/2.8L zoom lens.
Read More: Nikon Rumors