and Biz Stone has posted all the details. In a nutshell: comments, public profiles, new templates, post-per-page à la Movable Type, and a radical new look. Presumably the public profile stuff will merge (eventually) with Orkut-like stuff and feed GMail as well.

FAA hired a chimpanzee to manage quality-assurance. Kind of scary too though: “…a tape recording made on 9/11/01 containing statements from ‘at least six air traffic controllers who dealt with two of the hijacked airliners… was destroyed by a supervisor without anyone making a transcript or even listening to it.'”