Many people (including me) received their VCU1525 directly from Xilinx official distributors. As whitefire mentioned in the beginning, this card needs some modding, that's one of the reasons the group buy for modified BCU1525 started. So many people are already mining on these cards and using bitstreams from 2 distinct developers (whitefire/zetheron and digitalcruncher).

That more profitable bitstream should be available by 15.9. As whitefire mentioned, many changes in the coins happeneded in the last few months. He had to stop developments of some half-finished bitstreams due to either coins now having zero value or changing their mining algos. That also adds to the delays in bitstream publication.

Whitefire "advertised" (approximated) $20-$50 per day, but of course in the market conditions of that time (price, difficulty, algos). I guess he doesn't have a crystal ball to know how that all would be in 3 months.