Quote Originally Posted by Hyoma View Post
There will be different difficulty levels (normal, hard, extreme) or only one?
Quote Originally Posted by ZeroHigh View Post
also, what modes (NM, HM, EX) will be available upon release?
Quote Originally Posted by JoeDono View Post
Will Leviathan have normal, hard mode, and extreme mode varieties?
Yoshida: In the future, primal battles will be released at the same time. For example, in patch 2.2, we will add both the hard and extreme mode Leviathan battles to the game. We will also be adding the extreme mode King Moggle Mogg XII in patch 2.2, so there will actually be three of these battles added at once in 2.2
http://forum.square-enix.com/ffxiv/t...812-02-2013%29

This has already been answered.