Construction appears to still be in progress on the staging area and entrance way. As of now, some reports have described the set as a "curved LED screen". One individual speculates that the board may be motorized to move up and down.
Views of the ringside area show the usual tarpaulin setup over the ring, complete with circular LED board as a border around the top of the support columns.
As of now, the set lacks some of the elaborate beauty of the WrestleMania 29 setup in the same building six years ago. In that instance, various New York-centric landmarks (Statue of Liberty, Empire State Building, Brooklyn Bridge) were represented in replica form at the entrance way and atop the tarpaulin.
There's still time for the set to be finalized, but with about 48 hours to go before showtime, it's hard to imagine there being much more in the way of special set pieces added.