Since "The Negative One" came out, people have been speculating on who the new drummer for Slipknot is. Some people think it's still Joey Jordison, since the drum sound is similar. But more and more people are commenting on the style being that of Chris Adler, the drummer for Lamb of God!
A lot of people.
So many, that Chris has responded to the questions with the most, "I am the drummer" response possible, without actually saying that he's the drummer.