Analysts believe it will be pretty similar to the current iPhones, with the exception of the faster speed. More dramatic changes to the phone — multiple models, multiple price points, etc. — may be coming early next year.
I’m still crossing my fingers for a phone-as-modem feature. (It’s possible to hack the current iPhones to have this feature, though of course it’s quite slow on the EDGE Network. I wonder if the new iPhones will support it natively, or if not, if the hack will still be possible.)