The first of the teaching assistant applications is now available, for Australian citizens. The application deadline is December 11, 2009 and there are 80 positions available. Go to the France in Australia site for more information. Also note that if any Australians applied last year and were accepted into the program, but then ultimately decided to not do the assistantship, they are disqualified from applying this year.
Most other countries will make their applications available in October, so keep checking the official websites. The US program has already announced the due date for applications as January 15, 2010. I will post links to other applications and due dates when they are announced.