Guild chat does not work for some people. I am one of them. Sparkfly Fen, the center of the new content, is on perpetual overflow.
I cannot play the new content with my friends or even talk to them, but other than that and the bugs, it is going well so far. Reasonable expectations: in a few patches, the game will be back to where it was last week, and by the time I am on vacation, the new content will be playable.