Things change quickly in the world of rock and roll. AC/DC went from potentially never touring or recording again to releasing their new album in a period of months. So now we can expect new stuff from the legendary rockers. "AC/DC have finished their new album.The legendary rock band are expected to release their sixteenth studio album later this year.Lead singer Brian Johnson admits the group have toyed with the idea of calling the LP 'Man Down' - a reference to rhythm guitarist Malcolm Young's diagnosis with a ''debilitating illness''.Brian said: ''I wanted to call the album 'Man Down'. But it's a bit negative and it was probably just straight from the heart. I like that.'' The band is still missing guitarist Malcom Young. "The 'Thunderstruck' singer admitted that the absence of joint founding member Malcolm - whose brother Angus Young plays lead guitar in AC/DC - has dampened the band's spirits a little.Brian said: ''We miss Malcolm obviously. He's a fighter. He's in hospital but he's a fighter. We've got our fingers crossed that he'll get strong again."