D.C watch leaked the images of a few Fuji lenses which are rumored to be announced sometime in 2018. The lenses are: Fujifilm XF 8-16mm f/2.8 R LM WR, XF 200mm f/2 R LM OIS WR and GF 250mm f/4 R LM OIS WR Lenses.
Fujifilm XF 8-16mm f/2.8 R LM WR
XF 8-16 mm F 2.8 R LM WR will be a large aperture ultra wide angle zoom lens. But the lens will be surprisingly lightweight.
XF 200 mm F 2 R LM OIS WR
It is a large aperture telephoto lens with bright F2 equivalent to a focal length 305mm (in 35mm format) . This will be a dedicated lens for Sports photographers, Journalists, Birds Photographers.
GF 250 mm F 4 R LM OIS WR
GF 250 mm will be a single focal length telephoto lens equivalent to a focal length of 198 mm when used in 35 mm format.