Apple sent out cryptic invitations this morning for their, now official, September 9th event. In addition to this news, Apple seems to be building a mysterious building at the Flint Center, in Cupertino, CA.
Apple has not held an event at the Flint Center in many years, so the company's return to the site of the original Mac unveiling suggests its upcoming announcement will be a major one. — MacRumors
MacExperience will continue to keep you up to date as news is released.