Yes, it was only a week ago that it was announced that he would not be participating in their forthcoming tour. Sounded ominous at the time but I was just hoping it was just a break for a routine op.
Saw him just the one occasion about 30 years ago, with the Stones at a North American gig (huge crowd). He looked in good enough shape and enjoying it playing on that fairly recent Jazz 625 tribute on BBC4, about 2 years ago.