There’s been some updates to the Dalaran since we last visited it. It seems Madam Goya has decided to take up residence in the underbelly, and thus the black market has also moved there.
The underbelly itself has also changed, and has been divided into two sections, you can’t go from one side of the city to the other any more.
A bunch of the knickknacks that are placed everywhere have been updated as well. I guess with all of the Illidari returning there’s been a glut in the glaive market