Some of the first content for subscribers will launch on Halloween with the game. While it won't be a huge thing, players who've paid will be able to find a handful of quests associated with the holiday including trick or treat missions where they can find candy that will do anything from influence stats to acting merely as eye-candy by adding flames or a ghostly appearance to your character. One special piece of loot can also be found around the game called the Burning Skull Helm that will serve as armor but is also shaped like a demon's head and is on fire constantly.
Immediately following the Halloween event ending on the 4th of November is a Guy Fox Day event starting on the 5th of November since it's a British holiday and the game takes place in London. The event will focus around explosives and some events designed around the Gunpowder Conspiracy Plot and some special gear like the Fox Flame Guards which will add some more flaming gloves to your character if you're lucky enough to find them.