Snapshot from Earthcam earlier today.
http://www.earthcam.com/usa/newyork/worldtradecenter/?cam=tower3
With just the podium stumps I'm assuming they'll rise to where the green stops (assuming they include
all retail and mech floors) Yellow is the wood boards they're putting down now, and red is built/in the process of having concrete poured.
Photoshopped from
http://www.wtc.com/news/2-world-trade-center-renderings