Alright, so this is what I think. I think that until one of you readers leaves a comment confirming this unlocking method, it’s just another stupid rumor. Some guy on some forums says that you can buy a Turbo SIM card and can program it to work on your network via the iPhone. So you get the SIM card, you get the iPhone unlocked. All the features too apparently. Sounds fishy.
So T-Mobilers, you should pick up a Turbo SIM and try it out. What do you have to lose besides a $500 iPhone with a voided-warranty?