It could be solved as apple probably knew about this issue before iPhone 4's announcement. Don't you guys wonder why apple sell iPhone 4 bumper as an official accessory while previous iPhones didn't have such a thing?
I also wonder how the unlocked iPhones will be when customers purchase them from their carrier on full price with no commitment? I called apple and learned that any phone bought from a specific carrier, the phone then will be locked to that carrier permanently unless policies changed. I know you would say get it from apple outright, but what if someone has some dollar credits (like fido offers fido dollars) isn't better to get it from the carrier?
Wait to hear from you.