So that's what that gaint ship thingy with the dragon wrap around it is,and we finally get to enter it in 2.0 sweet.
Q20: Please tell us more about the Crystal Tower and the Great Labyrinth of Bahamut!
A20: The Crystal Tower will be an alliance-specific raid and an alliance party consists of three parties. Both the Crystal Tower and the Great Labyrinth of Bahamut will be expanded in multiple stages.
Also, as far as the Great Labyrinth of Bahamut goes, you probably figured out the Dalamud was used to imprison Bahamut. Players will find out why Bahamut was trapped, why the key-like object fell to the ground, what role the key plays in the dungeon, etc. Sorry, this is much as I can say for now!