Apple has begun sending out notices to various members of the media inviting them to a special event on September 9, one week from today. The invitation, entitled “Let’s Rock,” looks like an iPod Now Playing screen, with the album art replaced by one of Apple’s common silhouette iPod dancers, and the track information replaced by the event details. The “Let’s Rock” event will be held at the Yerba Buena Center for the Performing Arts in San Francisco, and is scheduled to begin at 10:00 a.m. Pacific Time. iLounge will be on hand at the event to provide coverage.