Come on reviewers.... I don't think the real question for users is whether or not they should upgrade from the iPhone 3G to the iPhone 3GS, but it should be for those of us on the first gen phone. If you have a 3G it should be really painfully clear that it is the same phone in essence.
I agree. People who have the 3G aren't even eligible for the upgrade price yet. I didn't buy the 3G when it came out because after the OS 2.0 upgrade it was enough to continue using the original iPhone. I don't see why anyone with a 3G would be all that interested in upgrading already. They're most of the features with the OS update.
It'll be more interesting to see the differences between the 3G