I have played with the A9 and the 100-400 for a day last October. Loved it. It is incredibly fast and light. I haven't used it In low light conditions, an area the camera should be amazing I used a day shooting into the sun instead (Miramar Airshow).
I love rumors <3. I go for a nice 2-ship F-35A's that are on their way to the Paris airshow, one week later. I can Imagine LM loves to show off the F-35 to its potential customer (Belgium). Wishful thinking?