This year will mark the 40th anniversary of the twin festivals rocking our summers. What better way to celebrate this huge milestone than to announce a goosebump-worthy, stacked lineup of bands who are dominating the metal scene and many who will be imminently. Nu metal pioneers like Korn and Slipknot will be taking on the main stages, surrounded by emerging powerhouses such as Spiritbox, Amira Elfeky and Unpeople that offer so much to be excited about.