Changes

Blizzard intended to phase chat channels out of B.net with their newer games, starting with Starcraft 2. They did not include chat channels in the design, and resisted adding them until continuous player requests wore them down. Chat channels were not supported during the beta or upon launch in July, but by October 2010 they were said to be well under development and due to be added in the future. There's no guarantee they'll be enabled for Diablo III, but if fans demand it they probably will.[http://diablo.incgamers.com/blog/comments/d3-will-have-chat-channels-on-battle.net/]