Correct me if I'm wrong but I also think Orientation Lock, which can be handled by any device, Is also not supported by the 3g... I'm severely disappointed that Apple wont give something as basic as Wall Papers and such to the iPod Touch 2g I have.
Pretty much one big scam by Apple unless something changes between now and release.
I never bothered jailbraking before but this whole mess with the the barely dated version getting screwed is making me think otherwise.
I think its more of a way to get people to upgrade. Even the first iPhone is probably more than capable of running OS 4.0 (maybe not as fast but they could optimize it) but if they give every feature to everyone then most people wont want to buy new hardware. I can sympathize that you feel cheated but this in no way a scam, they don't have to give you anything, but they were kind enough to give 3G users a few features. Be grateful. Then Jailbreak