The International Korfball Federation (IKF) has revealed the tournament format for this year's World Championship in Durban.
Action in the South African city is due to take place between August 1 and 10 and will be the biggest edition yet with 20 teams set to feature.
An initial pool stage will feature five groups of four countries each, the IKF confirmed.
The top three from each will advance to the last-16 along with the best fourth-place side.
Play-offs will be contested by the four countries which do not make it through to determine who finishes between 17th and 20th.
Five seeds have already been confirmed in their groups with The Netherlands, who will be aiming for a seventh-consecutive title, placed in Pool A.
Chinese Taipei will head Pool B with Belgium in Pool C, China in Pool D and Germany in Pool E.
The remaining places in the groups will be drawn from three pots, with England, Czech Republic, Portugal, Hungary and Australia in pot two.
Pot three contains Hong Kong, Catalonia, Poland, hosts South Africa and Suriname and pot four includes New Zealand, Slovakia, Ireland, Japan and Macau.
The draw will be made in Kalverdijkje The Netherlands on April 20, during the Under-19 World Championship.
Korfball, a mixed team sport, is completely dominated by the Dutch and Belgium who have met in every World Championship final since the flagship event was first held in 1978.
The Netherlands have won nine titles and the Belgians just one.
The Dutch have also won all nine World Games gold medals.