The Blackrock Spire
Old Azeroth, Meet New Azeroth: Keeping with the Aion gold theme of the expansions name, a cataclysmic event set in motion by the characters Death wing and Azshara will dramatically shift the landscape of Azeroth, and this will result in a number of game-play changes.
For one, Azeroth will make use of some of the more recently introduced features like the phasing system f Aion Wrath of the Lich King, and daily quests.
Other details on Azeroth changes f Aion the MMO-Champion report:
Some of the zones like the Thousand Needles will be flooded.
Durotar is wrecked and apparently Programmer could be destroyed. A new Orc city is rebuilt over the course of the expansion.
The Barrens will be split into two separate zones of two different level bands.
Azshara will become a low level (~10-20) zone.
Gnome Regan will be part of the expansion as well and gnomes might be able to reclaim their capital. (The last part is still unconfirmed)
Wailing Caverns will be becomes a lush tropical area as a result of the druid's magic.
The Blackrock Spire will erupt and a new version of Blackrock Mountains will be available, apparently Ragnaros will be back too.
