With World of Warcraft’s Cataclysm expansion coming soon, Blizzard is aiming to cut down on battleground and dungeon finder queues with region-wide queues. Eventually, battleground queues will no longer be based on your battlegroup, but instead region wide. All North American players as one region, will be able to duke it out against each other on the battlefield. Dungeon finders won’t exactly be region wide but instead made up of “four larger groups.” I’m not sure if that means four battlegroups or that there will be four different dungeon finder groups within a region. Despite these changes, arena queues will still remain battlegroup only.
There is no exact timetable currently set up for when this will all be implemented, but Blizzard has already begun merging a few battlegroups together. But hey if this just means a day or two of server lag when it is first implemented it won’t be too bad as long as it reduces overall queue timers.