We all suspected it, but now it is confirmed: someone very, very close to the 3G iPhone launch has told me that Apple will announce their new model at the WWDC Keynote on June 9th. The second-generation iPhone will be available worldwide right after the launch, and not at year’s end, as previously thought. The new model will also herald new sales policies in some countries.

Source: http://gizmodo.com/391960/iphone-3g-launch-date-confirmed