The iPhone is still unavailable at the Apple Store online.
So IMHO, they either ran out, as they must have stopped production weeks ago, and misjudged the amount of units they would sell between then and the release of the 2.0 or
It will be released this week.
I think either way you look at it they stopped production weeks ago. I think that the 3G Iphones have been being manufactured much longer than any of us think. They have had a very long time to work on developing this phone and if they plan on having a worldwide release than I'm betting they will have 4mil+ for launch.