Let's not debate too deep over bridges Nikon has to cross first. There are so many "roadmaps" around with subtle or big changes, like this "leaked" one: https://nikonrumors.com/2019/09/05/new-2020-2012-nikon-nikkor-z-s-line-lens-roadmap-leaked.aspx/
And you see, no single f/1.4, three f/1.2 until 2021... so that can change a dozen times before anything becomes a pricey reality.
Don't take Sigma as example, they are usually going big and heavy as anything else means "high price". And how compact Nikkor S f/1.2 will become has yet to be seen - given the size and weight of their f/0.95 without any AF unit... . There are still some uncovered filter threads
, like 95 and 105. I have 4 lenses, each with another thread. I still have to find out the advantage of this design...
And you see, no single f/1.4, three f/1.2 until 2021... so that can change a dozen times before anything becomes a pricey reality.
Don't take Sigma as example, they are usually going big and heavy as anything else means "high price". And how compact Nikkor S f/1.2 will become has yet to be seen - given the size and weight of their f/0.95 without any AF unit... . There are still some uncovered filter threads
, like 95 and 105. I have 4 lenses, each with another thread. I still have to find out the advantage of this design...