Still waiting and watching ...
As the title says. My 2 cents is that maybe they are too much "engineers" wanting a complete and perfect set of products to release and not enough "businessmen" to sell what is ready to go. This assumes that the stage 1 and 2 (?) will not affected by changes required for the later versions. I would assume not but we don't know precisely how they have built it do we.
The real problem, as I see it, is that they are not providing enough feedback to potential customers so here we are all making guesses and getting frustrated or even worse going off to find something else instead. Theirs may be better but if you can't buy it then it just doesn't exist.