The Apple TV "Apple Events" channel has returned in time for the “See you on the 7th” media event tomorrow. You can view it on, well, your Apple TV.
Apple’s big event will start at 10 a.m. (Pacific) on Wednesday. You can bet on seeing a new iPhone (probably to be dubbed the “iPhone 7”), the Apple Watch 2, and new Beats product. A final version of iOS 10 may also be available; if note, you can expect a release date to be announced. Also possible, but less likely, are announcements of new Macs, though I expect that to happen late this month or early in October.