Sad, but understandable news. Nicko was an inspration to carry on after what he went through. What a legend. I believe he has numerous other projects to be getting on with. its pretty much the touring with Iron Maiden he is taking a bak seat from.
I wish him the very best. Im at that age now, where shit like this has to be dealt with more and more. Many of my faves, for many decades, are slowly fading away. C'est la vie