Following the recent news about Wicher 500, I got an update from Spidi, who stated that the card design should be ready in about two months. after that Wicher will be available to buy, although there are no details yet about where it will be available, and how much exactly will it cost. I can only assume that it will be a cheaper alternative to ACA500+.
Another interesting detail is that Wicher will require EDO SIMM witn 60ns or less access time.
You can also find some details about the project here: http://retro.7-bit.pl/?lang=en&go=projekty&name=nastepny