Apple announced yesterday that it will hold an event on September 12, 2023, at 10am Pacific / 1pm Eastern. As I mentioned a few weeks ago, every year since 2012 (except for 2020 due to COVID), Apple has held an event in early September to announce the new iPhone, so I am quite sure that Apple will use the September 12 event to introduce the world to the 2023 versions of the iPhone, presumably the iPhone 15 line. One change that seems likely to come is a switch from Lightning to USB-C on the iPhone, which John Gruber of Daring Fireball discusses in this post. I suspect that we will also see updates to the Apple Watch, but beyond that, I don't know what Apple has planned.
The page on the Apple website for the event features an interesting version of the Apple logo with metallic (titanium?) dust coming off of it to announce the event. It sort of reminds of of the opening credits of the Apple TV+ show Foundation. It's a pretty neat animation. Do those colors have anything to do with the colors in the next iPhone? We'll see.
Select members of the press received invitations to go to Apple's campus to watch the (presumably) prerecorded announcement, and the tagline on those invitations said: Wonderlust. Read into that single word what you will.