Hard to believe, even though it's been a long time coming. Pancreatic cancer is a bitch to identify and when it's found, most of the time it's too late (speaking from bitter experience here). Poor bugger, he's the same age as my parents.
Everything above. It's a huge loss for both Apple and Pixar. I just heard about it on the radio and went, "what?!". I'm surprised, obviously, but it's not too out of the blue.