According To will buxton we should hear the name of 13 teams for 2011 season at Monza.But the organisation made a shortlist of 17 teams that you can see here:
http://willthef1journo.wordpress.com...gp2-next-year/
According to italiaracing there will be a shakedown at Castellet 18th november with the new car for the teams.Then we will see a four day test session with 2010 car at Abu Dhabi.
In 2011 there will be test sessions in asia and europe with 2011 car.