Blizzard has now explained the ultimate battle of all time, and the raid that will feature battling the Grim Reaper of Azeroth; Deathwing.
What’s known is there will be three dungeons, unknown the difficulty or size. It will feature Wyrmrest Temple being under attack. Fortunately for Level 70’s (and my own sanity), it will be instanced so non-raiders won’t see anything (the instance portals will be in the Caverns of Time). Non-raiders will still see the blues attacking and the reds fighting back, with Malygos still alive. The same daily for defending the temple of burning blue ass on a red dragon will remain.
The raid version, labeled “Dragon Soul”, features Thrall and all the aspects, trying to charge what is known as the Dragon Soul, a device that was forged by Neltharion (who became Deathwing) during the War of The Ancients. Once the device is powered, Thrall will use it to weaken the monster, then the battle is taken to the sky.
Blizzard mentions the fights will be upon gunships, trying to blast away at Deathwing’s elementium plating to expose his molten core and weaken the aspect, with players actually ontop of Deathwing’s back. It’s said that this fight will be taken place all over Azeroth. It’s unknown if non-raiders will actually see Deathwing fly by while doing normal questing. Currently, it shows the raid starting in Dragonblight, and ending infront of the Maelstrom, where Cataclysm began.
It’s now known that players will be literally.. ripping him apart, while jumping between islands. It’s also known that Deathwing’s true form will be seen, that he’s just another minion of the Old Gods. And he will refuse to go down without a fight. And one of his spells threatens to rip the planet apart and blow it up by calling a second cataclysm.
Here’s the blog post, explaining everything: http://us.battle.net/wow/en/blog/3516572/Patch_43_Preview-9_16_2011#blog