During a lecture at the opening of the Worldwide Developers Conference Apple CEO, Steve , Jobs, announced the launch of a new version of its phone, dubbed iPhone 4, which will include video conferencing, but only the iPhone 4 to 4. The device will go on sale June 24 in France. IOS4, the new version of the operating system of Apple phones will be launched on June 21 for the 3G and 3G models.

Besides a new design, the phone will include a high resolution screen with four times more pixels than the iPhone 3G. With a resolution of 960 x 640 pixels, the phone screen will contain almost as many pixels as an iPad. The unit will also have a more powerful processor. A new camera will go for video calls.

The new version of the iPhone is consistent with the prototype that had purchased the site Gizmodo. The site, which was the subject of a complaint from Apple, was denied access to the conference.

Before an audience of developers, Steve Jobs also detailed the advertising system from Apple, IADs. Apple will sell ads and accommodating – and donate 60% profits for developers. Apple affects 30% of sales applications.

IADs system will be launched on July 1, positioning Apple as indirect competitor of Google. With its Adwords, Google is the market leader in online advertising. “We think this system will represent 48% of the market for mobile display advertising in the United States, by the end of the year, “said Steve Jobs.