Are you kidding me, Apple? No support for the iPhone 3G or iPod touch 2G? Why would you do that in the middle of an OS?
there is nothing more the iPhone 3G can handle....its already slow with all the new features it has...anything else to kill the speed even further makes the 3G unusable....if people got the update, and it made their 3G slower then it is now, then people start complaining about how much slower it is with that update....so there is no reason to include the 3G in any further updates. Its a 3 year old phone now and doesn't need ANYTHING else. Upgrade