There are some upcoming local Oracle User Groups where Oracle Exadata will be discussed. If these are in your area, try to stop by to talke with Oracle experts on the subject. Here're a few upcoming (and leave a comment if we are not mentioning your local groups' meeting)
October 23rd: Oklahoma City Oracle Users Group - Tom Kyte will be presenting
October 28th: St. Louis Oracle Users Group - Charlie Garry, from Oracle Server Technologies Product Management, will be presenting
October 30th: Indiana Oracle Users Group - Charlie Garry, from Oracle Server Technologies Product Management, will be presenting
October 30th: Ohio Oracle Users Group - Graham Wood, from Oracle Server Technologies, will be presenting
Also a couple new Oracle podcasts featuring Oracle Exadata have been published.