Every year Blossa releases a new, limited edition bottle of a Glögg, a Scandinavian mulled wine, sweetened with honey, molasses or sugar, and imbued with fruit extracts and spices. Each limited edition is characterized by a specific colour (e.g. blue for the 2008 edition) and a specific graphical representation of the year number (e.g. 08).
Reference:
http://www.blossa.se http://www.bvd.se/en/news-28-01.htm