No, fzgfzy only states that:
Therefore three 075As is the upper limit, it could be fewer.
Yes that was a miswrite on my part, what I meant was that the existence of a larger follow on A variant was likely whereas having 3 075As was possible.
My understanding is that he believes 6 075s is on the cards, but he doesn't know after how many after the first 3 075s will they take to reach the As.
However given he's written in the past quite a lot about how the order for 075s was 3 initially and to be followed by a larger A variant, I rate it as mote than likely that the As may follow the first 3.