There's been some chatter here, and in the blogsphere in general, that the iPhone 3G isn't a compelling enough upgrade for current iPhone users. 3G speed is nice, but not everyone has it in their area. GPS rocks, but Google cell and Skyhook WiFi triangulation is good enough for a lot of location services. And the flush headset jack? Already bought an adapter. So aside from some internals, like rejiggered sensor arrays, better speaker quality, and more radio-friendly plastic back, some just don't feel like the iPhone 3G brought enough new stuff!