I'm not sure how vaporware fits in....maybe that FF Pentax is vaporware? Several lenses over the years have appeared to become vaporware, I have heard.......but I can tell you about "
Pie in the Sky" . Pie in the sky is when you buy into an idea that is mostly insane...like believing that a company that is selling a few lenses to begin with, can almost double the price of those lenses and dreamy eyed believers with rose colored glasses begin to imagine Mom & Pop Camera Stores popping up all across America.........
Look for them in the sky....along with the pie, they are both made of the same figment of imagination.
Regards!