I had heard the same thing, Dave. The concert here in Albany is billed as the last chance to see him on tour. The local radio stations say that he will continue to perform at special events, concerts, etc., but that no more large-scale touring (he still does a considerable number of dates per year).

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"David Gilmour can do more with one note than most guitarists can do with the whole fretboard."

Dave Mustaine (Megadeth)