3G is coming.
AT&T has said so.
Apple said that they were working on it, at the initial release.
Vodafone is only a 3G carrier in Australia (it doesn't even have access to the 2.5G EDGE network - only Telstra does because it needs backwards compatibility for businesses)
European Countries (the ones really bucking for 3G) have sold off mass quantities at a substancially lower price, probably at slight loss, getting ready for this.
It is coming, and the AT&T memo being sent to all their stores makes it clear that this is not simply rumor, its happening...
But Jobs' won't let this one get out. No one who can't be trusted will see it, till it is released. I mean, AT&T never saw the real one until a fortnight before MacWorld 07', so what makes you think that anybody will get a photo of it?
The anticipation over iPhone 2 is palpable at the moment.
Job's isn't going to let go of that

Expect the announcement at WWDC, I say. No earlier, and certainly no later.