You’ll want to bookmark the 100 Year Starship Initiative‘s new site, which just came online. From the mission statement:
100 Year Starship will pursue national and global initiatives, and galvanize public and private leadership and grassroots support, to assure that human travel beyond our solar system and to another star can be a reality within the next century. 100 Year Starship will unreservedly dedicate itself to identifying and pushing the radical leaps in knowledge and technology needed to achieve interstellar flight while pioneering and transforming breakthrough applications to enhance the quality of life on earth. We will actively include the broadest swath of people in understanding, shaping, and implementing our mission.
And check here for news about the 2012 public symposium, which will be held in Houston from September 13-16. Quoting from that page:
This year, 2012, DARPA gave its stamp of approval to and seed funded —100 Year Starship (100YSS)—a private organization to achieve perhaps the most daring initiative ever in space exploration: human travel beyond our solar system to another star!
Meeting the challenge of 100YSS will be as or even more transformative to our global world as Sputnik or DARPA’s commercialization of the ARPA net that became the Internet. Make no mistake; this is not your grandfathers’ space program. 100YSS—An Inclusive, Audacious Journey Transforms Life Here on Earth and Beyond.”
Join us in Houston, September 13-16, 2012 at the 100YSS Public Symposium as the journey begins!