Apple’s new CEO is about to have his first big moment in the spotlight.

The tech giant announced it will hold an event on September 9, when it’s expected to reveal the biggest-ever change to its smartphone lineup: the first foldable iPhone. It’s the company’s first major product launch under John Ternus, who will take the reins from Tim Cook on September 1.

The event invitation includes the tagline “surprise and shine,” although it does not include any details about what Apple plans to announce.

Apple’s September event is widely considered to be the company’s most important moment of the year. The company will likely introduce other new phones and Apple Watches, as well.

But this year’s keynote will be about more than just new gadgets. It’ll also be the first opportunity for Ternus to lay out his vision for Apple.