I'm going to say that it will crash to begin with, due to everyone dumping items, they got their gold, there's a lot of uncertainty if people will like it etc. So they'll be less apt to buy gold.
However, it's going to go up once EOC is under way due to bots being down, but the market for gold make not be there like it used to be.
Just have to wait and see
tl;dr; prices will go down before and during release, go up once EOC is stable.