As to whether anyone is going on the new Freedom Tower is up for much speculation. A family friend who works for the Port Authority, and was the engineer in charge for that portion of the project said that the TV stations changed their mind no less than 3 times on this issue, and the last was that they are not going on it. They have gone with a simulcast system on up to 8 buildings throughout NYC, mostly owned by Bloomberg.
I would imagine that there might be some commercial users and possibly NYPD, but SOD was always on top of the Citicorp building since the 80's. 482.4875 is supposed to be for S.I. 470.8375 is for the rest of the boroughs. I hear SOD all day long at my office in Croton on Hudson.