Looks pretty awesome... and have to admit... the hype is building just reading the names!
Phase 1 (Classic Launch)
Molten Core
Onyxia
Maraudon
Phase 2
Dire Maul
Azuregos
Kazzak
Phase 3
Blackwing Lair
Darkmoon Faire
Darkmoon deck drops begin
Phase 4
Zul’Gurub
Green Dragons
Phase 5
Ahn’Qiraj War Effort begins
Ahn’Qiraj raids open when the war effort dictates
Dungeon loot reconfiguration: Tier 0.5 Dungeon gear, Relics, drop rates and location changes
Phase 6
Naxxramas
Scourge Invasion