I wonder how long till the people that are "dying for an iphone 2g now" will take to start complaining about data charges being expensive.
I hope you dont think that speeds are updated and the price remains the same.
I presume you mean 3g not 2g, but I'm pretty confident it won't cost more, here in the UK i KNOW it wont.
Why would it cost more? Unlimited data is exactly that....unlimited.....what difference does it make how quickly you got that data? The necessary equipment is already up and running for 3g, there is no extra cost to the carrier as far as I can see.