Apple will have a live, virtual event on September 14 at 10 a.m. Pacific Time. You can read about it on Apple’s site, which says nothing at all:
https://www.apple.com/apple-events/?cid=CDM-USA-DM-P0021399-484205
Slightly more was released on Apple’s Twitter account,
It isn’t a very useful or informative tweet, but it is pretty.
What people think Apple will talk about are new iPhones and possibly Apple Watch models, plus new versions of iOS, iPadOS, WatchOS, and probably tvOS (for the Apple TV). Some commentators are speculating the event may also announce more Macs, but traditionally that has followed at a separate event in late September or early October.
Whatever they announce, we will probably talk about it at the SMUG meeting on September 21.