The Night Revels is centered around several quests and dungeons in Delera’s Graveyard. This year the event includes a pair of new dungeons that boast a “more spooky, Night Revelry theme.” In both old and new instances, players will look for special ingredients that can be turned in for seasonal rewards.
If you don’t mind a few minor spoilers, take a tour with Turbine’s devs through Update 33 after the jump and then stay tuned as they answer several community questions.
Source: YouTube