There are a lot changes to the place like:
-
new NPCs
-
new stuff around the starting zone
-
the void portals turns you into a shadow ghost and takes you across the zone while before the void portals only teleports you to the next platform
-
a new portal to dalaran (legion one)
-
banners for both kirin tor and alliance
-
lanterns
-
more void elven themed stuff
And many more…