Apple has sent out invitations to its September 9 event. The invites simply list the date on a white Apple logo background with the words: “Wish we could say more.” This time around, the event will be held at the Flint Center for the Performing Arts in Cupertino, California. As usual, the event will be held at 10 a.m. PT, 1 p.m. ET. It’s expected that we’ll see two new iPhones at the event, and according to a Wednesday report,…