On September 12, Apple will host a live product announcement event out of the Steve Jobs Theater at its Apple Park campus in Cupertino, California. The company is expected to announce multiple new iPhones and an updated Apple Watch, but other product announcements are also possible.

Ars will be in attendance, so tune in here for our liveblog at 10am PDT (1pm EDT, 5pm GMT).

Apple's iPhone X has been the top-selling smartphone since its launch in November 2017, so expect Apple's new phones to draw from the trends that the X started—specifically, a near-edge-to-edge display that has a notch to house the TrueDepth sensor array. We're also expecting a new chip that, according to Apple's usual naming convention, will be called the A12. That chip might be the result of a 7nm manufacturing process.

We don't know much about the new Apple Watch, but it will probably be called the Apple Watch series 4. Early reports, exploration of the watchOS beta, and leaked images have led observers to believe the new watch will have a larger screen size and resolution. Apple may choose to introduce new health-monitoring or fitness-tracking hardware.

We've also seen reliable reports that the company is working on new iPad Pro models with edge-to-edge displays and no home buttons. Those reports rumble about Apple wanting a new MacBook, a new Mac mini, and a TV-streaming service, among other things. However, the company has not always announced iPhones and Macs at the same event. We wouldn't be surprised to see the Macs come at a later date.

In any case, it will be a big day in Cupertino. We'll see you for the liveblog when the event starts.