I guess this will apply to touch too: http://www.engadget.com/2007/12/30/iphones-upgraded-to-1-1-3-cant-be-downgraded/ Oh dear. I bet they start pumping out touches/iphones with the new firmware on as soon as it is released. Ok, so the SDK is coming out...so what? I don't get this reason. As far as I can see only LICENSED apps from apple can be installed. Totally gets rid of TRUE third party development.