New Raid Dungeon

[MongoJerry]

Naxxramas looks like the only major dungeon between now and the expansion (patch 1.11 or 1.12 maybe?). So I wouldn't hold my breath for a new 5 man dungeon. I wouldn't be surprised to see more casual friendly non-dungeon content however (such as the Field Duty quests unlocked when the AQ gates open) between now and then.

I've heard rumblings of some another dungeon or two being developed to be released before the expansion. At least, I should hope so, because the expansion won't be coming out until the fall, and that's a long time without new content.