Up to now canon has kept its native f stops on lenses to 5.6 so they work with all cameras. A f8 max lens would not for instance work with a 7D v one, or in my armament my backup SL1. So a long lens max f8 is unlikely.Does anyone know if Canon will ever be inclined to provide non-L super-telephoto primes? Since the new 100-400mm F/4.5-5.6L IS II has effectively consolidated the 300mm F/4L and the 400mm F/5.6L, I'd like to see OIS USM versions of those lenses without the great white bodies and price tags. A 600mm F/8 IS USM would be pretty nice too.