Guild Wars 2

I´m not sure if this has been told or not, but will we get a new soundtrack just for the expansion? I would really love it.
It would be nice, if it came with a deluxe edition or like that (in form of a CD) and if we get a new soundtrack, will it again be Jeremy Soule or like lately Chappelle and Diemer?

Greetings,

Munin

Maybe a dungeon, where we will fight against Modremoth, like Arah and Zhaitan.
That would be really nice, in my opinion.