Well, i've seen photo's of the development stage at december 2009 and it seemed to be coming along quite well, so considering the weather conditions it might be a bit delayed but i think it'll be opened reasonably on time in 2010.
They actually do plan to keep woolly's. Their site mentions the fact that they kept them before, but not where the animals are coming from. Gaiapark Kerkrade had a youngster last year, and Apenheul is still doing well with them. I don't know how well Basel and Monkey World are doing, but i think there are options to get a breeding pair together...