As rumored before, Apple has scheduled its iPhone announcement event for September 10. It will take place in the Steve Jobs Theater at the company's headquarters in Cupertino, California, at 10 AM local time. The company has sent out the official invites to the event today, and you can see the included artwork below. Innovation seems to be the word of the day (or rather, of the year) so we're excited to see how that will feature in the new iPhones. According to past rumors, leaks, and speculation, we're expecting to see three new smartphones, each a successor to last year's iPhone...