It was never possible.
and by there "excellent" marketing communications, nearly all other unfirm FPGA developers scared and canceled their project.
good job.

From my point of view,
this is a big part of the story here.
This is what was so inethical/illegal. They
almost scared us out of producing the X6500 in bulk. I'm glad we went with our guts and pulled the trigger, though.
"Bait-and-switch" is what this is called, and it's illegal. Yes, people can get refunds, but many probably won't. That's the point of bait-and-switch. Furthermore, many probably would have ordered FPGA mining boards from the competition weeks ago if this product hadn't been dangled in front of them like a carrot.
I'm not saying this was all intentional by BFL, but it's what happened whether they meant to or not.