The guys from Dev-team have released the first video of a jailbroken iPhone 3GS, unlocked with a little help from an application called ultrasn0w.
This happened just days after the miraculous unlock of the iPhone 3G and iPhone 2G and apparently jailbreak for both. Since many non AT&T mobile users in the US and people with non iPhone 3GS networks are expecting the unlock, we are sure that this news comes as a new hope.
You should expect the official release at Dev-team website very soon and until that day finally arrives you can watch how the unlocked iPhone 3GS works with T-mobile's card here.