The speaker list is up, and Sam is going to speak in the section titled (of course) Reason.
“Adored by secularists, feared by the pious, Sam Harris’ best-selling books argue that religion is ruinous and, worse, stupid—and that questioning religious faith might just save civilization.”
http://conferences.ted.com/TED2010/program/speakers.php
Maybe Sam can pepper us with what he will talk about…