TPCi has just released the information on how to qualify for Worlds this year. Unlike last year, you simply have to hit a certain threshold for Championship Points instead of being in the top x amount of players in your zone. The threshold varies based on which age division and zone you are in.
http://www.pokemon.com/us/play-pokemon/worlds/2016/vg-competitor-information/
USA & Canada
Masters: 350
Seniors: 325
Juniors: 200
Europe
Masters: 275
Seniors: 200
Juniors: 100
Latin America
Masters: 150
Seniors: 100
Juniors: 100
Asia Pacific
Masters: 200
Seniors: 150
Juniors: 100
South Africa
Masters: 400
Seniors: 400
Juniors: 400
Additionally, day two invites will be given out as follows:
USA & Canada: Top 8
Europe: Top 16
Latin America: Top 4
Asia Pacific: Top 4
Japan: To be determined
South Korea: To be determined
http://www.pokemon.com/us/play-pokemon/worlds/2016/vg-competitor-information/
USA & Canada
Masters: 350
Seniors: 325
Juniors: 200
Europe
Masters: 275
Seniors: 200
Juniors: 100
Latin America
Masters: 150
Seniors: 100
Juniors: 100
Asia Pacific
Masters: 200
Seniors: 150
Juniors: 100
South Africa
Masters: 400
Seniors: 400
Juniors: 400
Additionally, day two invites will be given out as follows:
USA & Canada: Top 8
Europe: Top 16
Latin America: Top 4
Asia Pacific: Top 4
Japan: To be determined
South Korea: To be determined