The Applications for 28th TOPIK test are being accepted from 7th of August, 2012 and will continue till August 20, 2012. 28th TOPIK is being held on 28th October, 2012 in Korea and other countries around the world. You can check the Test locations in your country here.
Who can apply: Anyone who has enough money to pay for application fee. They have literally no eligibility criteria.