AC/DC guitarist Malcolm Young has confirmed to Classic Rock magazine that the band is working on the follow-up to 2008's "Black Ice". But he said fans will likely have to wait longer than expected, after singer Brian Johnson suggested there would be new material next year."You know what Brian's like. He just says things and then walks away," Malcolm said. "It'll be a little while — a year or two anyway. He added, "I've been doing some jamming on some song ideas but I do that all the time, as do the rest of the band. We are still working. But we had a long rest between 'Stiff Upper Lip' and 'Black Ice', so I think we need a couple of years to recuperate and work on it a bit more." During a January 2012 appearance on "The Cowhead Show", the American radio program hosted by Mike "Cowhead" Calta, Johnson revealed that health issues were affecting one of his bandmates, which may have put new album plans temporarily on hold. "One of the boys is a little sick and I can't say anything, but he's getting better," Brian said. "He's doing wonderful. Full recovery fully expected." The singer added, "It's a wonderful thing when we get in a room. Whenever the boys get back together, I get all excited. The boys, after a while, pick the guitars up, Phil [Rudd] will make his way to the drums, Cliff [Williams] will pull his bass out and then all of a sudden this noise comes out and I sit there with just this big old grin on my face."