Recap iPhone 6 and 6+ launch (video) iOS 8 updates and adoption numbers. Launch Apple Pay.
OS X Yosemite recap and launch same day. Full Continuity.
iPad Air 2 and iPad mini retina to gain touch ID, A8X, Health Kit options, (maybe some type of Apple Pay POS support?)
Something new (iPod Touch/iPad Air Plus)
Longshots: Something with Apple TV, new Mac hardware, Retina Macbook Air