Just a quick little heads-up, MuscleNerd has just confirmed on his twitter that the dev-team will hold iPhone 4 basebands unlock until iOS 4.2.5 or iOS 4.3 official release which last.
Official iPhone unlock statement: no unlock will be released until after 4.2.5 or official 4.3 (whichever is last) is outI know well that this news may be frustrating for most of you who are waiting eagrly for the unlock, but to be fair enough, it makes sense that they hold it as the release of iOS 4.3 for public looks imminent. Stay tuned !