Not available yet anywhere in bottles.
Fans of both Iron Maiden and real ale can sign up to get news and updates on Trooper Premium British Beer from ironmaidenbeer.com where bottles will be available to purchase by both UK and overseas customers from May 2013.
From the bottom of the press release...I too am excitedly awaiting it's release.
Primary: Rusty Toothless Mead, Unholy Scourge Altbier
Secondary: The Dark Side Imperial Stout
Bottled:Lumberjack Bastard Apfelwein; Home Sweet Home (Shiner Clone); Super Duper S4itszu Rice Wine, Yellow Fizzy Beer, Satan's Viscious Maibock, Hairy Monk Oktoberfest, Ankle Biter Cider, Gnarly Smurf Weizen, Roland's Quaffable Graff, Magic Red Table Wine