|Photo from Propeller Brewing|
They do have an extremely limited amount of RIS in 650 ml bottles available, especially for those who may want to cellar it. Those will be sold exclusively in Propeller Shops, until they run out.
In addition it will, of course, also be available for growler fills and by the glass in the Tasting Room. Propeller describes its stout as "a dark, strong and bracing brew, with a deep, rich, black colour, the brew improves with age. The alcohol is well masked by intense hop bitterness, extreme roasted malt and dark fruit notes. Our Russian Imperial Stout weighs in at a whopping eight percent, with a deep, rich, black colour."