With the death of Ollie Johnston, all nine are gone. It seems to me to be a definitive close to the classic years of Disney. It's sad news indeed, though he did live to be a ripe old age of 95. His work, and the work of his fellows, will live on long after all of us alive today are gone. RIP Ollie.
Here's a link to a full article about Johnston's death: (I don't know how to make links, so you'll have to cut and paste.)
http://www.cartoonbrew.com/disney/ollie-johnston-1912-2008