There's a lot of "up and coming" cities in the U.S., I'm guessing there must be a massive exodus from all of the traditoinal "big" cities like Chicago and Boston. Add to the list:
* Nashville
* Pittsburg
* Charlotte
* Orlando
* San Jose (at least in terms of population, not sure about industry)
It's an interesting phenomenon given how in the developing world there are more super large cities, are we going the opposite direction?