I have an iPhone 4 and my boss has a locked AT&T iPhone 4S (I need to ask what the capacity is). I'm thinking he'll upgrade to the new iPhone when it comes out, and it looks like Apple is set to announce it and release it next month. Based on past iPhone releases, what do you think the value of the 16GB/32GB/64GB iPhone 4S will be after the next iPhone is released? For convenience sake for both sides, he may be willing to sell it to me for a little less than market value after he upgrades. Thanks for your feedback!