Allagash Brewing has been releasing nationally, a handful of oak barrel aged sour/wild ales. The most recent (and still making it around distribution) is Midnight Brett. Prior to that was FV 13 and Merveilleux.
Tiarna is a blend of 100% brett fermented pale ale aged in French oak barrels and then blended with a saison.
When Allagash Tiarna is released, it would presumably arrive in 2014. Allagash will have details and any distribution details when the beer is ready.
Tiarna means “Lord” (Aristocratic term.) Irish origin.