Clans and Communities to be Added to Diablo III in patch 2.0.1

Diablo 3′s first expansion, Reaper of Souls, will add two new social features to the dungeon crawler : Clans and Communities.

Both features will be officially added in Diablo III patch 2.0.1, but are currently available on the test realm and the ongoing Reaper of Souls beta.

Find more details on  official post