https://www.cnbc.com/2017/08/31/apples-iphone-8-event-is-confirmed-for-september-12.html

Apple is officially hosting its iPhone 8 event on September 12.

The company just sent invites out to press with a note: "Let's meet at our place. Please join us for the first-ever event at the Steve Jobs Theater in Cupertino." That would mean this is the first event at the new campus.