Within hours, Apple CEO Steve Jobs will walk onto a San Francisco stage and pitch his company's newest products.But what's he going to shill and shuck? After all, didn't Gizmodo spill the pot o' beans in April when it grabbed the Web's attention -- and Apple's -- with the iPhone prototype?True, but there's still plenty we don't know about Jobs' keynote at the company's annual Worldwide Developers Conference (WWDC), ranging from the official confirmation of Gizmodo's findings to the date when Apple will ship the iPhone OS 4 upgrade. Based on conversations with analysts and experts over the last several months, we think we have some answers to the outstanding questions.