Second that.Anyway, people have had their iPhone 4's unlocked without providing that info over the phone by friendly agents from AT&T. It depends on who you talk to. I wish I had some raw data, but I only know what I've read here.
I have said that in an earlier post and will say that again. I bought iPhone 4 on the launch day, then bought unlocked 4S last fall and sold 4 on eBay. When AT&T announced that they will be unlocking iPhones this past April, the person who bought my old iPhone 4 contacted me asking if I could try to get it unlocked for him. I used chat on AT&T website and the first 2 reps whom I talked to refused, saying my iPhone 4 was still under contract. The third one processed the unlock, no questions asked.