Skyfall has been announced as tonight's (up until now) "secret screening" at the AFI Festival in Hollywood. It will screen tonight in the historic Grauman's Chinese Theater at 9:15. Tickets are free, but available only at the AT&T box office at the festival, located on the fourth floor of the Hollywood & Highland shopping center. Even then, I don't think a ticket guarantees entry, so if you plan on attending, be sure to arrive plenty early to line up.
Read my generally spoiler-free review here.