Ok - so it's 3 major patches away (probably) but, unlike WotLK where we knew exactly where we'd be fighting the Lich King in the end, Cata doesn't have an obvious 'final raid' area yet.
So, any ideas where it might be? Will it be in an existing zone? Maybe his lair is somewhere in Twilight Highlands? I can't really see it being in Hyjal, Uldum or Vashj'ir. He could go back to Deepholm but he'd probably destroy the World Pillar again....Remember he's a big dragon so he'll need somewhere big for his lair.
Or will they add a new landmass/island into the game like IQD for tbc for the raid? The rumour is that Kul Tiras will be featured in this expansion later on - maybe that will be this expansions version of IQD with Deathwing stomping around destroying the island and the inhabitants desperate for help from the Alliance and the Horde (hmm - lore issue there - maybe the Horde just invade to get to Deathwing and cut through the inhabitant there).
Or will they come up with some kinda phasing outdoor raid for Deathwing? Maybe have him destroying Stormwind or Orgrimmar (depending on your faction) and you having to save the city. That could be cool - although technically probably very challenging.
What do you think it'll be?