Steve Jobs will officially announce the 3G iPhone during his keynote at Apple's Worldwide Developers Conference on June 9, according to analysts at Citi.

The 3G iPhone will be the "first of an impressive wave of new products" from Apple, wrote Citi analysts Richard Gardner and Yeechang Lee. They also expect an updated Mac laptop and iPod lines. The Apple conference is scheduled for June 9-13 in San Francisco.

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In addition to a 3G iPhone release in early June, the 2.5G model could have a "minor casing change" and a price drop to between $299 and $349 in the US, compared to the current $399, wrote Shaw Wu, an analyst with American Technology Research, in a research report.

Those predictions are consistent with a February prediction Gardner made that 3G iPhones will be announced by midyear. The 3G iPhone release will help Apple meet its target of shipping 10 million iPhones in 2008, Gardner wrote at the time.

Apple is confident it will sell 10 million iPhones this year, officials said during a conference call on Wednesday to discuss the company's second-quarter earnings.

When asked about the possible release of a 3G iPhone, Apple Chief Financial Officer Peter Oppenheimer declined comment. Apple has new products in the pipeline that the company is excited about, Oppenheimer said.