Via Architecture Daily:
Designed as seven unique building stacked on top of each other, the stepped 2 WTC tower will rise 1,340 feet – a height that would make it Manhattan’s third-tallest building if built today. 21st Century Fox and News Corp will occupy the 80-plus story building’s lower half. The upper portion of the building will be leased by Silverstein Properties to various tenants. Each tenants’ unique set of needs will be accommodated by the seven custom tailored volumes. At its base will be a 8,000 square-feet (3,530 square-meter) lobby, connected to Santiago Calatrava’s neighboring transit hub, and retail. 38,000 square-feet (3,530 square-meters) of lush outdoor terraces will be integrated throughout the building.
Many more renderings are at the link.