With the release of Patch 2.4.3 today, construction has commenced at the docks in Stormwind. It's located between Cathedral Square and The Park, at the end of the canals. If you talk to the workers in the area, they'll tell you that they are preparing to bust out the wall to create a new entrance to the city. There's lots of life bustling around the construction site, and here's your first tour.
Gallery: Stormwind Docks