They're going to formally launch it at IFA-Berlin later this week, but I can't find what the actual release date or who will carry it. This is indeed the Wifi model, not the one that had previously been sold in Europe. Retail will be 139 euros. The Story HD Wifi will be tied to their ebookstore.
KNV is a distributor, not a retailer, and they support around 7,000 booksellers in Germany, Austria, and Switzerland. They also distribute ebooks to their retail partners, and according to Wikipedia they have around 35 thousand titles in their ebookstore.