Later this month, starting on April 22nd, best European teams will clash for glory, title, and the ability to proceed further in the tournament; to conquer the World Championship title. Few days ago, ESL revealed the groups of the event. The full name of the event is the Heroes of the Storm Europe Summer Regional UK. Yeah, that's right! The Regional will be held in the UK. Here you can buy some tickets if you plan to visit the event in person. Lastly, this is the link to the original ESL post. It has more detailed info on the groups, schedule, and so on.