Apple CEO Steve Jobs opened the 2010 Worldwide Developers Conference today by announcing the latest iPhone incarnation, the iPhone 4. As expected, the latest handset features a high-resolution display, a faster processor, and video calling, but it also sports unexpected additions like a new antenna and a gyroscope. It will be available exclusively with AT&T starting June 24. The price with service is fair--$199 for the 16GB phone or $299 for the 32GB device--and both models come in white and black versions. No, we did not hear a peep about the elusive Verizon iPhone, but we didn't anticipate any news on that front.

Even from the outside, you'll see that the iPhone 4 marks the biggest upgrade since the iPhone 3G (the 3GS didn't add much beyond a compass). The profile is thinner and you'll notice a new front-facing camera (more on that later). The iPhone 4 also serves as the debut device for the newly named iOS 4 operating system, which brings such much-needed features as multitasking, a unified e-mail in-box, and app folders for the home screen.

On the whole, this iPhone 4 has us more excited than we were last year when the the 3GS was born. The new features, particularly those in the new operating system, are long overdue and we welcome any efforts to improve call quality (remember that it is a phone, after all). There were a few things that we were hoping for that we didn't get--a 64GB model, among them--but we look forward to reviewing this model.