Very likely, give it a few weeks and you should have an unlocked iPhone.
And it'll be completely unlocked and free to use both voice and data (3g) on any carrier that supports the necessary frequencies?
I'm sure there's some sort of quick rundown of what it takes to unlock, but is it a relatively easy process for the guys like "The Dev Team" (I think that's their name)? I'm sure that they've had enough practice with it now that they know what to look for to do it but even for them, with Apple and perhaps ATT trying to throw in different countermeasures, is a pretty straightforward process?