Blizzard DOTA(Blizzard All-Stars) is a new official custom game for StarCraft II, inspired by the Defense of the Ancients (DOTA) custom map for Warcraft III. Much like other DOTA-style games, Blizzard DOTA is a team-based competitive game in which each player controls a powerful hero with unique abilities, and works with his or her team to invade and destroy the enemy team’s base. On Oct 18, 2013, Blizzard officially announced the game will be launched under the title - Heroes of the Storm.

http://us.battle.net/heroes/en/