iPhone 4/iOS 4 jailbreak has just been released by Comex after a huge time of waiting. Just head over to JailbreakMe on your iPhone, iPad or iPod Touch and follow the instructions. It works on the device itself, so open up safari and type in the following URL https://jailbreakme.com. If that doesn’t work for you, try https://jailbreakme.modmyi.com.
The site seems to be slow right now as it’s getting hammered with traffic unsurprisingly. Happy jailbreaking! If you need any help, let us know in the comments and we’ll be glad to offer you assistance.