It's spring in Antarctica and the ozone hole has already developed. Average temperatures over the area and controls on ozone depleting chemicals means the amount of ozone removed will be large but not record proportions.
The image above is of nacreous clouds at the Davis Base on September 1, 2008. These polar stratospheric clouds occur at 10 kms and higher above the surface of the earth. It's the particles in these clouds that initiate the chemical changes in the atmosphere that leads to the formation of the ozone hole.
In September 1987, the international treaty to protect earth's ozone layer was signed. The Montreal Protocol is a global agreement to limit the production and release of man-made substances which cause harm to the protective blanket of ozone in the stratosphere.
I posted another nacreous cloud in 2006.