Two groups of 4, with pre-alotted placements based on icc rankings before the tournament:
Prior to the tournament, the ICC announced the eight seeded teams for the Super 8 stage based on T20I rankings — Australia, England, India, New Zealand, Pakistan, South Africa, Sri Lanka, and the West Indies. If they advance from the group stage, they will be placed in the pre-determined positions, irrespective of their position in the group stage. If an unseeded team qualifies at the expense of a seeded team, they will directly replace the seeded team in the Super 8 group. No points are carried over from the group stage to the Super 8.
At the moment Group 1 consists of India and Australia,
Group 2 currently has West Indies and South Africa.