Random House Books has also acknowledged the writer's death. A post now up at the publisher's site reads, "McCaffrey died at her home in Ireland on November 21st shortly after suffering a stroke."
The first SF book I ever read was 'Restoree', and the Pern books followed soon after - I wore out several paperback sets of the original trilogy. She had such an influence on me when I was a teenager; she was the doorway into a whole new world. I met her once at Norweson back in the 80s, and remember it vividly. She was so full of joy, and had a sparkle about her. She'll be missed.