Creek the most current edition is the 2010, available here:
http://www.amerpoultryassn.com/APA_ShoppingMall3.htm
If there was a 2012 edition the APA would have it listed for sale.
People looking for show ducks buy from lines that are listed as SQ, known winners and they buy the SOP so they can research and be aware. It's just that simple. Those wanting pets tend to not bother with it at all.
Goto the American Poultry Association web site and purchase a copy of the SOP (standard of perfection) so you can read the details of faults and correct line and color for the breeds you are raising.