I checked out the official Apple iPhone site especially the screencasts of the phone user interface and ipod capabilities set. As an iPod owner, $500 is worth it just to get my hands on this next generation iPod which makes my Video iPod look old and busted. On the other hand, although the text messaging UI is pretty sweet a cellphone without tactile feedback when pushing its buttons is a pain in the ass especially when the layout of the buttons continually changes. I wouldn't wish that on my worst enemy. Maybe I'm just unusual in the fact that I don't want to be required to look at the cellphone's screen when using it. I pull my phone out of my pocket, unlock it and call the last number dialed often without looking at the screen before putting it to my ear. It's hard to imagine that my muscle memory would ever get used to to doing that without tactile feedback from the phone when navigating its interface. It also hasn't been announced whether the phone will be able to sync with Microsoft Exchange or not. As someone who used his phone to keep on top of the goings on at work while at CES, this is another non-starter.
That said, I have to agree with a lot of the stuff said in the article Macworld: Ten Myths of the Apple iPhone. A lot of the complaints about the iPhone just seem like sour grapes. Me, I'm going to wait until I can get an unlocked iPhone so I don't have to replace my Cingular 3125 or until Apple ships a 6th generation iPod (aka iPhone sans phone features).