The iPhone seems set to ship in the US on 11 June, according to Apple's exclusive network partner there, Cingular/AT&T.

A CNet report explained that Cingular's customer service teams have begun telling enquirers that the release date will be on 11 June.

The date is a landmark for another reason, too – it's also the first day of Apple's annual developer jamboree – the Worldwide Developers Conference in San Francisco.

Initial demand for the iPhone when it ships in the US seems set to be very strong. Cingular chief operating officer Randall Stephenson this week revealed that over one million potential customers have contacted the company's customer service teams so far to request details when the product ships.

With strong speculation predicting Apple will release a version of the iPhone with 3G support by the end of the year, or early in the next, interest is likely to be equally strong when the product ships in Europe in winter.

Apple has said it aims to sell ten million iPhones within the first 12 months of the product's release.

The mobile market last year saw one billion handset sales.