In the new trailer, Ul' Dah gets hit by some meteors from dalamund. So I doubt it's not gonna get at the very least some cosmetic changes. Also they already said they will be adding new pathways and easier ways to get around in 2.0.

Hopefully we get some sort of Cross City chat so we can hear the same shout in every city, that way 1 city isn't overcrowded all the time.