If you check out the north face of the tower in the second rendering, you can see that they've used the inset balconies to create an alternating pattern every five floors. Looks like it could be interesting.
I'm disappointed by the loss of the diagonal bracing above the podium, but I'm relieved that the silver-coloured grid on the facade has been maintained. The grid on each side of the tower looks like it will now be pushed out slightly, creating notched corners, which I think looks quite nice.
I do wish that the tower was a little darker, as per the original renderings.