“Join us from Apple Park. September 15, 2020, at 10 a.m.?PDT.” the Apple Events page says. The timing is right for a new iPad Air, potentially with USB-C. Also possible is the Apple Watch Series 6 (series 5 is out of stock) and a lower cost replacement for the Series 3 models. What about iPhone?
iPhone 12 (12, 12 Pro) will potentially be announced, although it’s equally likely that iPhone will be delayed until October due to Coronovirus delays last spring.