02, exclusive carrier of the iPhone in the UK and Ireland, will be launching the iPhone 3G from their Web site tomorrow, as implied by a notice posted tonight right after Steve Jobs stepped down from his speech at WWDC. My sources say O2 will be using their site to control the initial sale of iPhones as they get them from Apple, though whether that’s because of production/supply delays or because they expect large demand is not that clear. Probably the former.