The Sabbath man is writing his life story at the moment
In an interview with the For Bass Players Only website Butler revealed that he hoped to have his autobiography out next year, as well as some new material of his own.
"I have been writing songs for a possible G//Z/R album and slowly compiling memoirs – what I can recall of them. I'm hoping to have the book out in 2012, but it is very slow going. An album, maybe in 2012, is also a possibility."
Butler recently moved to put an end to any rumours about a Black Sabbath reunion saying, "I would like to make it clear, because of mounting speculation and rumours, that there will definitely be no reunion of all four original members of Black Sabbath, whether to record an album or tour."