Image courtesy: Camerasize.
Now I am 100% sure that Fuji will likely be the first company to challenge the Sony FF mirrorless cameras!
1) Next year (2014) they will launch a new X200 Full Frame fixed lens camera that will compete against the Sony RX1. But unlike the RX1 the X200 will have a built-in hybrid viewfinder.
2) In early 2015 Fuji will then launch a complete new Full Frame mirrorless and interchangeable camera. It will compete against the Sony A7-A7r (and future A9) series.
It’s also 100% clear that Fuji will develop their own Organic sensor for these cameras. They will not borrow the sensor from Sony!