In a new interview with Rolling Stone, Bob Weir previews Dead & Company’s tour by teasing a new “wrinkle” the band plans on adding to their shows this summer. And by “tease” we mean he most certainly doesn’t give away much of anything, leaving it open to interpretation. “I really won’t know what we’re looking at until a few days into it at least,” he says of this new wrinkle. “That’s what’s…