Patch 3.3.5 will allow cross faction/realm chat
http://www.wow-europe.com/en/info/un...testrealm.html
The most interesting part is the Friends List notes.
In addition to its current functionality, the Friends List will now allow players to add Battle.net accounts (Real ID). Players will have to confirm that they are friends in order for a Real ID to be added. Once Real ID friends, players can communicate cross-game, cross-faction and cross-realm.
A Broadcast window has been added to the top of the frame. Players can use this to broadcast a message to all of their Real ID friends online. This message will also be displayed under the broadcaster's Real ID information in each friend's list.
I see that like an option to arrange multiboxer cross realm and cross faction battles with relative ease.
Now if they allowed Real ID (whatever this is) friends to join cross realm raids then that would also be really cool PvE feature and I could only see it as a 25 man raid full of boxers.