[STR]

Nope. X-bracing was removed (probably) to save on labor costs, since x-braced tubes almost always use less structural material than verendeel truss tubes. The extra floors were likely removed because they found out during the design process that they didn't need two extra floors of HVAC's, transformers and what-have-you. There's the same number of office floors, and because of the way the new floor plates are shaped, there's slightly more office space in this iteration (~600sqft per floor x 53 office floors=32,000 more sqft).