I can't wait to pickup an Apple iPhone later this month! — The main reason to jump ahead and be an early adopter in this case is that I'll still have my Sony Ericsson W810i (3.9 x 1.8 x 0.8 inches) as a backup device.
Speaking of device sizes, the iPhone is 4.5 x 2.4 x 0.46 inches… so although it's slightly thinner than my current phone, it does stick out a half-an-inch more in each other dimension! 📐

I'm not a fan of the “unsightly pocket bulge” that carrying too much stuff can introduce, but I am really excited to integrate on-the-go with my favorite web apps and email. — At one point, I'd tried to adopt a BlackBerry, but if Apple's gotten it together… this could be a winner in both the business and personal categories alike.
I will say that I do wish the iPhone's case was a single color, though. 😅
Hopefully it'll work with Mobile17… which just crossed the “6-million pieces of mobile-content served” milestone last night! 😃