About 18 months ago, when I really started investing time reading lens reviews, it was pretty much unanimously stated the the 70-200 f/2.8 II was the world's sharpest zoom lens.
6 months or so ago, the 24-70 II f/2.8 was considered a contender to that crown with some reviewers stating it IS the world's sharpest zoom.
Last month, the 200-400 f/4.0 became the latest to be spoken of in such terms.
Imagine the new 14-24 f/2.8 rouses similar reviews.
So with 4 lenses, you could realistically cover the 14-560 range with potentially the 4 best zoom lenses in the world.
Add your speciality lenses. 100mm L macro, the 17 & 24 TSEs...you may just be looking at the best lens lineup in photography.
Let's hope the new cameras take a significant step up!