This building will be 709 feet, not 687 feet. For some reason Emporis lists it wrong.
From the Shangri-La website:
The unique design for the slender 709-foot-tall tower calls for exterior columns incorporated into the building’s faceted curtain wall, using low iron glass to achieve a crystal clear appearance of the tower.
http://www.hotel-online.com/News/PR2...ngriLaNYC.html