I see both models still being sold. Either the 2.5 version will be discounted (though not less than the iPod Touch with the same capacity) or they will keep it at the same pricepoint but make it factory unlocked. I'm guessing it'll be the former, but we'll see. While I know many people who are waiting for a 3G version, I know just as many people who are aware of the lackluster support of 3G networks in the US and would be very happy with a cheaper iPhone running EDGE and WiFi.
that would never happen. first of all when has apple ever kept the old product for sale once the new one has come out? second why would they want to sell a dated product when their trying to convince you to buy the new one? the 3G will be able to work on EDGE when there isnt 3G around so whats the point?