RateBeer is calling this year’s version a Dubbel with 8% alcohol and fermented with sour cherries. Dunedin’s own page says:
A special holiday ale brewed in the country farm spirit of times past. This winter warmer has a complex, spicy taste and aroma that will delight your senses and warm your soul. Share it with friends and loved ones. Dunedin Brewery Microbrews are handcrafted beers, made in small batched with all-natural ingredients.