I'm not getting excited anymore. The two lenses will be 200-400 and the 24-70 f4... and you can buy them two years after the release of the 32 f4 in 2018...
The 35, 135 sells in serious numbers so why update? Man, those lenses must have been crazy good for the time when released! Wish Canon would release lenses so good it would take 20 years for it to even a point to update, hint 50 L does not quite to that...