Very, very sad news indeed. RIP Joe.
You know, it's strange, but I had a thought yesterday afternoon...while reading through the thread about voting for Joe's HoF induction, and about how he had been re-admitted to the hospital, the thought struck me: this is one of those things where you're going to wake up one morning and hear that he's gone. Pneumonia, cancer, etc. = not good things.
I just didn't imagine it would happen this quickly.