The new Pokémon VGC season appears to start in September , with the 2026 season calendar described as beginning with local and major events in September 2025 and running through the 2026 World Championships.

For the new 2027 Championship Series , the season is set to begin on September 1, 2026. If you meant the current competitive VGC platform change, official coverage says VGC transitions to Pokémon Champions as the standard competitive platform starting April 8, 2026.