Blizzard's confirmed a summer release date for upcoming MOBA Heroes of the Storm.

Heroes of the Storm's open beta kicks off on May 20, followed by the official launch a couple of weeks later on June 2.

A short trailer was released following the announcement, watch it below.

Heroes of the Storm's roster includes characters from Diablo, Starcraft and World of Warcraft, and will have more than 30 playable characters at launch.