Those who have been waiting for an iPhone 4 Carrier Unlock would be happy to hear that it has been done. Geohot did show the iPhone 4 Limerain Jailbreak, but this is an actual iPhone 4 unlocking that is proved on video.
As mentioned by @musclenerd, this is the world’s first soft-unlocked iPhone 4 hack that has been presented. Moreover, it still needs some work, so there is no official release just yet. Those interested in Unlocking and Jailbreaking previous versions, check out our previous posts:
– How To Jailbreak iOS 4 using PwnageTool 4.01 hacktivation: iPhone 3GS, iPhone 3G and iPod Touch 2G
– iPhone iOS 4 Jailbreak for iPhone 3G and iPod 2G using RedsnOw 0.9.5
– How To Jailbreak iPhone 3.1.3 Firmware with SnowBreeze 3.1.3
– How To Jailbreak Your iPad, iPad 3G and iPhone 3.1.3 with the Spirit Jailbreak