From Liquipedia StarCraft 2 Wiki
The season kicks off June 23 - June 29 with the MLG Summer Regional Open Online Qualifiers. Players who did not finish in the Top 80 at the Spring Championship will have to qualify through the Open Online Qualifiers. The Top 8 players from the Open Online Qualifiers will go on to compete in the Invite-Only Online Qualifiers of their respective region later in the season. An entrance fee of $10 is required to participate in the Open Online Qualifiers.