The world Twenty20 tournament will be played in two groups of five with the top two teams from each group advancing to the semi-finals.
Chennai and Mumbai in same Champions League group
The September 23 to October 9 competition, which will feature 10 of the world's top T20 sides, will be played in two groups of five with the top two teams from each group advancing to the semi-finals.
The tournament will be played in the southern Indian cities of Chennai and Bangalore, as well as Kolkata in the east.
Chennai will host the final and a semi-final, while Bangalore will host the other semi-final.
Seven teams from India, Australia and South Africa have earned given direct entries, while six others will play off for the remaining three spots in a qualifying tournament at Hyderabad from September 19-21.
The qualifying event will have two pools of three teams with the top side from both advancing, along with the next best qualifier.
The Kolkata Knight Riders, Trinidad and Tobago of the West Indies and the Auckland Aces of New Zealand will be joined by two teams from England and one from Sri Lanka in qualifying.
The Super Kings are the defending champions.