About the video: As the tech world anxiously awaits the expected unveiling of the 3G iPhone at Apple's developer's conference, several questions beg:

* What new features will it include?
 • What will the phone cost?
 • How will the new phone impact Apple's stock?

I addressed the first two issues in Friday's feature on the iPhone. As for the stock, it is falling midday ahead of the expected launch, and following a critical story in Barron's about a potential supply glitch. The bottom line: Tune out short-term volatility and focus on Apple's core business prospects, which look solid largely because of Mac sales, not the iphone.