This is quite stupid. Couldn't they just make an update for the iPhone 3G? Why does one app (video recording) need a new phone? I can't believe that these things are so damned expensive either. They're like £350 in the UK, and then you have to pay about £30 a month in a contract to O2.
And anyway, nobody's found a way to jailbreak the 3GS. That would be the only reason I'd consider buying one of these. I have a mobile, and I have an iPod. I don't really think I need to buy a merge of the two.
Because Apple are so loved my the press, they always gloss over something that should have been installed on the phone already - video recording. Hell, my Samsung D600E could do that, and it's a few years old.