StarCraft II: Heart of the Swarm will introduce clan support to the game for the first time once it is released.
After creating a clan players will have the opportunity to set a clan name and a 2-4 character clan tag that will appear automatically next to the names of all members in the clan. Clans will be limited to a maximum of 50 players according to Blizzard. The developer added that it is “working on support for Groups: players who want to associate casually, and in larger numbers.”
Clan support will be added in the next major patch for the current Heart of the Swarm beta.