The Freedom Tower, also called 1 WTC, as well as Towers 2, 3 and 4 are all scheduled for completion by 2012. "Can you count on this schedule?" asked Larry Silverstein, president and CEO of Silverstein Properties which is developing the site. "You bet you can."

The future of WTC, and the state of Downtown as a whole, will be spotlighted on May 13 at RealShare Downtown New York.

The project, which will is targeted to cost $20 billion with the inclusion of public works and transit improvements, will be the result of an "incredible construction-coordination machine," said Anthony Shorris, executive director of the Port Authority of NY and NJ, which owns the site and is leasing it to Silverstein. Inflating construction costs are "a constant source of pressure," he said, and "we're wrestling with it as much as anyone else." But Silverstein said those costs have "begun to moderate to some degree."