Question: Rotting in Vain was featured on a Korn album that, according to Brian Welch, is heavier than anyone's heard them in a long time, and was released when?
Sentence (from "The Serenity of Suffering"): The Serenity of Suffering is the twelfth studio album by nu metal band Korn, released on October 21, 2016.
Relevant evidence: Yes