Tamil Nadu government today announced that the ninth World Tamil conference would be held at Coimbatore from 21 to 24-2010 in january next year.The decision was taken at a meeting chaired by Chief Minister M Karunanidhi, a release said.Invitations would soon be sent to Tamil scholars and other prominent Tamils living abroad, it said.The venue for various events, routes for the rallies and other details are yet to be finalised at a meeting attended by Finance Minister K Anbazhagan and Deputy Chief Minister M K Stalin.