It’s no secret that Blizzard’s World of Warcraft has lost almost half of its subscriber base. Now they have slightly less than 8 million active accounts. That’s still a lot sure, but it has to hurt.
Now Blizzard will be introducing Connected Realms in Patch 5.4, which works in the same way as the current dungeon cross-realm tech, except that they are full servers. Blizzard says, “In Patch 5.4, we’re looking to address this with a new feature called Connected Realms. Building on our existing cross-realm technology, a Connected Realm is a set of two or more standard realms that have been permanently and seamless “linked.”
These linked realms will act as one cohesive realm, meaning you’ll be able to join the same guilds, access a single Auction House, run the same Raids and Dungeons, and join other adventurers to complete quests.” Don’t worry, these Connected Realms will be matched in theme and will be seamless.
Source Ubergizmo