At various X-H1 presentattion Fuji did show this image of the new 200mm f/2.0 XF lens. They said it’s “coming soon”. Here are size comparisons with other lenses made by Fujirumors:
200mm vs XF50-140 and the XF100-400.
200mm vs Canon EF 300mm F2.8L IS USM and Sigma 300mm F2.8 EX APO DG HSM