Darkness is coming in October.

As it has every year since 2007, Minneapolis, Minn.-based Surly Brewing Co. will again be releasing Darkness, a Russian imperial stout brewed with pale ale, golden promise, crystal, dark crystal, oats, black, chocolate, and roast malts, as well as Columbus, Amarillo, and simcoe hops. Historically, Darkness has been released in October, and this year is no exception, as a post on Surly’s website indicates that this year’s “Darkness Day” will be held on Oct. 24 at the Brooklyn Center location.

According to a label filed with the Alcohol and Tobacco Tax and Trade Bureau (TTB), this year’s incarnation will be packaged in 750ml bottles and will feature bottle art of a “screeching bat-nightmare” by local artist Brandon Holt. Past years’ label art have included depictions of a mummy, the Devil, a vampire, a werewolf and the Grim Reaper, among others.

In addition, filings with the TTB indicate that there will also be a barrel-aged version of Darkness packaged in 750ml bottles that was aged in rye whiskey barrels.

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“No creature is more adept at navigating in the Darkness than a bat,” reads the beer label. Emerging from a deep and ancient cave, this year’s twisted nocturnal creature has evolved a set of adaptations well suited to detecting and devouring uncommon nourishment.”

Historically, Darkness has been released in October at an event held at Surly Brewing appropriately dubbed “Darkness Day.”

A call made to the brewery for additional details was not returned.

Update (Sept. 17, 2015) — This post was updated from the original published on Aug.16, 2015 to include event date and location details.

Update (Sept. 29, 2015) — Added label and information pertaining to 2015 Barrel-Aaged Darkness.