The market life-span of most electronic devices these days is about 6 months. With every cellphone maker on the planet gunning for Apple right now, there is no way they'll just sit on the current design. They have already established 16GB of flash storage with the touch, so a 16GB or even 32GB iphone is definitely coming sooner than later. Also, with the talk that Apple will open up the iphone to 3rd party developers next year, I'm guessing that a new iphone will accompany that introduction. Look for announcements at MacWorld.