I have just purchased the iPhone upgrade, the iPhone 3GS. I got the 32GB hard drive for more iTunes music, podcast and photos. And, now video is available, officially. I have to say that using the jailbreak’d iPhone 3G was slightly annoying with videos. Now the 3GS has integrated it properly, it’s much easier to use and well organised.
The compass is an additional piece of tech. It’s handy but not the most creative of ideas for the iPhone.