I just stopped on my ride in to watch them raise and install the first connector truss between the two east buildings this morning! Very exciting, much faster than watching the Cityplace skybridge go up (though not a fair comparison)
I thought it was just a trick of the light on the different angles but it sure looks like every other floor they are alternating between opaque and clear glass on the balconies. I kinda wish they'd done the whole thing in the opaque glass.
The west residential tower shown is a slightly askew rectangle following the line of Lake Shore. The light-lined east residential tower is like a mis-shapened peanut (or liver-shaped) in plan. Looks like it has wrap around balconies similar to Ice.