The Back In Black hitmakers were thrust into the spotlight this week (beg13Apr14) when reports emerged suggesting they were planning to announce their retirement due to the failing health of one of the bandmembers.
Johnson has now spoken out to assure fans the group still plans to honour a commitment to begin recording sessions in Canada in May (14), however, he does concede that one of the musicians is suffering from a "debilitating illness".
He tells Telegraph.co.uk, "We are definitely getting together in May in Vancouver. We're going to pick up some guitars, have a plonk, and see if anybody has got any tunes or ideas. If anything happens, we'll record it."
He adds of the future of the band, "I wouldn't like to say anything either way about the future. I'm not ruling anything out. One of the boys has a debilitating illness, but I don't want to say too much about it. He is very proud and private, a wonderful chap. We've been pals for 35 years and I look up to him very much."
Johnson has previously insisted the group planned an ambitious tour to mark their 40th anniversary in the music industry, but he admits he has no idea whether it will still go ahead: "That would be a wonderful way to say bye bye. We would love to do it. But it's all up in the air at the moment."