The speculation heated up in March, when Slipknot posted a photo of a broken drum stick on Instagram ... including a headline set at Knotfest Iowa in September, which will be their first show ...

Five-year-old Caleb H. has been playing drums since the age of two, and judging by his “performance” at a recent Slipknot show in the U.K., by the time he turns 10 he’ll be slaying stages worldwide.