http://www.humanityp.../2009-h-summit/
The date is December 5-6. Keynote speakers include de Grey and Ben Goertzel. The list can be found at the above link.
I'm probably going to buy my tickets today. They are still $150, however, the price will go up as the date gets closer.
I know CerebralCortex from Ireland will be there. Anybody else planning to make the trek?