"We're not gonna be heading back into the States until February of '16, I think, is when we start the U.S. tour," Mustaine told fans during a Periscope session on October 31.

"And we've got a pretty interesting lineup. I'm sure you guys are gonna be stoked. I can't say anything yet until it's confirmed. But it looks like everybody's gonna be accepting the tour. And it'll be four of us."