I can't think of any kit boats supplied with panelled sails as standard; the marketing department usually baulks at the extra cost. I'd guess that it was fitted at a later date.
Anyhow, if you can get it sailing, it should give you years of enjoyment.
If you're looking for help in setting it up and sailing, most one-desgn classes such as the Victoria, Seawind etc. have web sites that give a lot of generic information or you can ask here.