Apple has invited several members of the press to a special "Let's Talk iPhone" event on October 4th, which can only mean one thing: an official announcement of at least one new iPhone.

Strangely, the event is being held at Apple's Cupertino campus rather than in San Francisco - the venue for all previous iPhone and iPad launches.

It's still unknown whether we'll see the iPhone 5, the iPhone 4S, or both at the unveiling, though you can probably rule out an iPad 3.

We can safely assume that the highly anticipated iOS 5 software update will also receive a slice of the attention next Tuesday, with some new details and a more definite release date presumably forthcoming.

Hopefully.