The great thing about all of this talk about a 200mm f/2 is the fact that Fuji wants to "play ball" with the two big boys. If they add this lens and they also introduce the 33mm f/1.0 then they are completely ready to do battle and I think a lot more people will follow and help them achieve this.
I have shot pro Lacrosse and Hockey with both Canon and Nikon and when I first put the X-T1 in my hands about 3 or so years ago I hoped that some day soon we would be talking about exotic fast lenses and flagship cameras that could use those lenses perfectly.
Well that day is getting closer. Fuji is doing what the other two big boys aren't doing...listening to it's customers and putting out products for the most part of what we want. We are asking, they are giving.
It's not the other way around...
Two very large groups thought were left out of the picture up to this point. The birding, and sports photographers. When the X-T1 was introduced and released it had pretty good focus but not to the levels of the Pro DSLR's by Canikon. When firmware update 4.0 came out it made the X-T1 an even better camera. With is 8fps speed it also gave us more value because it was a sub $2000 camera and not many other cameras we're out there that could do a lot of the same capabilities (definately not in Nikon's world).
Heck Nikon just finally introduced the D750 to replace its ancient 8 year old model D700.
Now with the release of the X-Pro2. One of it's many nice features, the small joystick on the back allows us to move the focus points around as quick as the high priced DSLR's which has improved the capabilities of a camera that not only did the two left out groups of photographers want, but everyone will benefit from.
So now we are getting whiffs of rumors about the longer glass and I am glad that they are talking about it because it's a need that will really bring Fuji up to the table with the big boys.
Canon and Nikon don't want Fuji at that table because they have always been the only ones sitting there.
When they introduced and released the 50-140 Fuji fans were happy. When they introduced and released the 100-400mm f/4.5-5.6 Fuji fans got even happier. "When" not if Fuji releases the 200mm f/2 lens I will be there waiting to swipe my CC with no hesitation.
What that also means is they will release a 300mm f/2.8, and then the 400mm f/2.8 and again you will probably see me swiping my CC for the 400mm f/2.8 because it probably by that time will have the X-T3 or X-Pro3 camera body to be attached to the back end of it.
At that point you will also see me at the X in Minneapolis shooting for the NHL so come tap me on the shoulder and ask me questions about if I like the setup!