Over the years World of Warcraft players jumped from a server to another in their search for friends, guilds and overall the most competitive experience. With time, these shifts in player population created some gaps between the servers making a less-than-optimal play experience on some of them. Blizzard decided to solve this problem by introducing the Connected Realms system in the upcoming Patch 5.4.
Build on the existing cross-realm technology the Connected Realms feature will allow players, from two or more realms that will be “linked” together, to join the same guilds, access a single Auction House and run the same Raids and Dungeons.
Usually this move was done by merging the servers but with their current technology Blizzard can avoid that.
Player’s home realm won’t be indicated in the game world, but in certain places, like chat, the realm will be displayed next to the player name. Which realms will be connected wasn’t announced yet, but they will only connect realms of the same type: PvE/PvP/RP.
The Connected Realms will be implemented after the launch of Patch 5.4.