Got mine (32gb) ordered from Apple. Of course I don't get it till sometime in July but, no long lines and such.
Been researching it quite a bit and although I have never been an Apple fan or customer, it looks pretty amazing. A bit expensive for a phone and service dollar wise over the contract period but,...... hey it's cool!
Battery replacement (when needed, and when replacements are actually available) is a snap!
Already got my iTunes account setup and got a few free apps to start with.
I am currently not in a 3G area for AT&T although they have promised me that the tower 3 miles from me will be upgraded in the next 4 weeks or so. I am currently using a Sprint Mi-Fi for internet (3G tower about 8 miles away). I have a 5gb plan on Sprint and intend to use the iPhone 4 Wi-Fi to do most of my data work.
So, I can use the 2GB data on AT&T with or without the tower upgrade (with EDGE) and 5gb on Sprint 3G thru Wi-Fi. Total 7gb available to me each Month. COOL!
