Elton John has said, again, that he and partner David Furnish plan to adopt another baby to give their son Zachary a sibling. He told the British publication the Guardian that, "It's going to happen. We talked about it before we had (Zachary). I think it's difficult to be an only child, and to be an only child of someone famous. I want him to have a sibling so he has someone to be with. I know when he goes to school there's going to be an awful lot of pressure, and I know he's going to have people saying, 'You don't have a mummy.' I want someone to be at his side and back him up. We shall see." John has just returned to performing after being hospitalized in May with a respiratory infection, which forced him to cancel a planned run in Las Vegas. He'll take part in Queen Elizabeth II's Diamond Jubilee Concert on Monday (June 4) in London. He releases a new album, "The Diving Board," this fall.