According to Graca since that or at least next 2014 edition will be changes.
World Grand Prix will have 3 Leagues with 8 Teams, where 1st League will have the Best Teams. After every edition the weakest Team from 1st League will play in 2nd and the best Team from 2nd in 1st. The same situation will be between 2nd and 3rd League.
The same rules will be in Men's World League.
Main decisions in next month.