Apple is expected to launch its latest iPhones and possibly a new version of its Apple TV set-top box on September 9, after engimatic invitations were sent to key media outlets.
The tech giant has invited recipients to an event starting at 10am (local time) at the Bill Graham Civic Auditorium, which can hold about 7,000 people, in San Francisco. The email invitation included a colourful Apple logo with the sentence "Hey Siri, give us a hint".
Apple is widely expected to unveil the iPhone 6S and the iPhone 6 Plus S, representing upgraded versions of its current top-of-the-range phones, with media speculation suggesting the company is also preparing for the largest initial production run for its next iPhones by the end of the year.
Posing the invite's question to Siri to a current-model iPhone results in the digital assistant responding with answers such as, "You're cute when you're desperate for information" and "You'll have to wait until September 9. I bet you were one of those kids who snuck downstairs to open presents early, weren't you?"
Among the features likely to be included in the new range is Force Touch technology, which can distinguish between a light tap and deep press, and Cross Research analyst Shannon Cross said she was also expecting a faster processor on iPhones.
"We assume that they may come out with a new iPad at the event as well," Cross added.
Apple did not immediately respond to requests for more details on the event.