David Dunlap has a nice story about the typeface used for the inscription on the Freedom Tower cornerstone. Inspired by the sign on the Port Authority bus terminal, the typeface was designed by Brooklyn native Tobias Frere-Jones, whose name for the font, Gotham, was not just serendipity. [Read an interview with TF-J where he cites the WTC destruction as an inspirational facet of the design.]
Meanwhile, Curbed (safe. for now.) reports on the best/only way to actually catch a glimpse of the cornerstone.